The following list is from Betabeat - a solid online publication that provides the best coverage of the NYC tech scene. Click here to read this article in full. I’m only re-posting the startup overviews.
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Entrepreneurs Roundtable Accelerator is a seed stage incubator based in New York City that just accepted its 2nd class of startups. Here is the complete list of startups:

Appy Couple:

Appy Couple lets you quickly, easily, and affordably create a gorgeous mobile app to share all the excitement of your wedding with invited guests. The Appy platform populates a mobile app in real time, and includes features like picture uploads, virtual champagne, countdown, and geolocation.www.appycouple.com

Cinchifieds:

Cinchifieds is the world’s simplest marketplace. Users catalog what they’re interested in buying or selling, and Cinchifieds does all the work, delivering matches directly to you. Cinchifieds makes buying and selling a cinch.www.cinchifieds.com

Dibsie:

Dibsie makes it easy to find, organize and discover products online by integrating social networking with powerful search capability. Dibsie streamlines the process for discovering and sharing products by allowing users to search thousands of retailers and brands, then bookmark favorites for sharing through a mutually-curated catalog.www.dibsie.com

LocalBonus:

LocalBonus allows consumers to use their existing credit and debit cards as their loyalty card at local merchants and gives merchants an easy way to deploy a rewards program to build customer loyalty.www.localbonus.com

Pictorious:

Pictorious is a photo-sharing game that creates a fun way to explore the world, meet new people and earn awesome rewards and prizes. Pictorious also helps brands and merchants engage with and attract customers.www.pictorious.com

ShareRebate:

ShareRebate is a referral tool that helps mobile app developers get more downloads. The referral tool seamlessly integrates into any mobile app and starts to offer users of the app rewards for recommending the app to friends and family.www.sharerebate.com

Stray Boots:

Stray Boots turns the walking tour on its head through its cell phone-guided, interactive urban games in cities throughout the U.S. Stray Boots curates the games and delivers them to customers’ phones via its proprietary software, taking urban explorers on an adventure that’s more fun, engaging and flexible than other ways to explore the city.www.strayboots.com

STYLYT:

Stylyt is redefining the way fashion brands acquire loyal fans. Partnering with contemporary and boutique brands, Stylyt launches collaborative fashion design campaigns that allow any user to customize an item in a collection, vote on user entries and even choose the winning design entry to be manufactured and sold.www.stylyt.com

Wizpert:

Wizpert is a real-time platform that instantly matches people who need advice with experts who are qualified to provide it on a wide range of topics from parenting to relationships and nutrition. Wizpert offers immediate access to a simple, helpful form of human communication. Talking. www.wizpert.com

WowWombat:

WowWombat is an event sponsorship marketplace that provides an easy way for businesses to find and interact with their target audience. A business selects events to sponsor based on the demographics they want to reach and scale they can afford—while event organizers post event details to receive sponsorship.www.wowwombat.com

Everyone’s familiar with email, the cost-effective channel that brands are shifting more and more budget to each year. While it isn’t the sexiest weapon in the marketing arsenal, there’s a few new players in the space looking to spice things up a bit - Sailthru and Movable Ink.

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Movable Ink’s app allow users to stream live content into their emails. Every time someone opened opens an email, their technology serves live content based on the time, recipient’s locations, social context, and your business rules - increasing the emails relevance and context for every user.

The dynamic content can include:

Just off the phone with my new friend Charlie Maddock, Director of Biz Dev for Shapeways, and I am a huge fan of what they’re doing.

Overview

Shapeways is the world’s first 3D printing community that allows users to upload designs of just about anything and bring them to life - including cuff links, home decor, iPad cases, board games, jewelry, and much more. If you can design it, they can make it real.

For those who aren’t designers, they have a easy-to-use customization portal on their website that lets people customize things like sake sets in minutes. Check it out here. Or you can browse and buy the creations of others.

How does it work?

In their words: “We define 3D printing as any additive manufacturing process whereby one machine turns a digital file into a finished physical object by building up that object layer by layer. If you were to be more precise the technology would be called rapid manufacturing and 3D printing would just be one of the manufacturing processes used to create objects in this way.”

Still don’t get it? Watch the video below.

How Can Brands/Advertisers/Creatives Use It?

1. Shapeways 3D Design Classes: They’re already hosting classes on Skillshare, but for agencies and other creative companies, it would be great to have Shapeways come in and do a class for your employees. It would add another weapon to your design arsenal for both clients and internal creative executions.
2. Design Contests: Have a brand start a design contest for Shapeways community to participate in. Kool-Aid could incentivize people to create cool Kool-aid Man products, IKEA could have people create home decor, and the list could go on and on.
3. Branded Store: Creative shops could/should open up branded stores within Shapeways to showcase and even sell designs from their creatives. It’s innovative, forward-thinking, and a great portfolio piece to showcase to clients.
4. Just make/buy cool stuff: Strategic initiatives aside, use Shapeways to make cool stuff for the office, home, of as gifts. Their products are one-of-a-kind, sure to impress others, and give a wow factor to those uninitiated to the brand. For ideas, check out their gift guide that’s organized by personality type.

Things to Note

• Shapeways is opening a factory in New York in 2012, which will improve logistics as well as establish a physical presence for people to tour and get to know the technology. New York, being the design hub that it is, will undoubtedly show its support upon opening.
• Printing materials include stainless steel, silver, sandstone, ceramics, and much more. Full list here.
• If you can’t attend a Shapeways class, no worries. They have a robust repository of tutorials and downloadable models.

In short, I highly recommend getting to know Shapeways. Whether for a brand or yourself, it’s products are undeniably cool, custom, and innovative.

Really digging what 140 Proof is doing. Below is a general overview, details and ideas to come soon.

Overview

140 Proof is the first social stream advertising platform, reaching 175 million users on Twitter by parsing the public social stream of data providers like Twitter, Foursquare, and Blippy. 140 Proof’s API provides the main revenue streams for social stream applications and websites like UberTwitter, Echofon, HootSuite, and Plixi.

The company was founded in 2009 by Jon Elvekrog and John Manoogian III, formerly of LinkExchange and Organic, respectively. 140 Proof grew out of the social currency app Plus One as a way to target positive sentiment in the social stream.

140 Proof Advertisers can promote a short, contextual message with a links that appears above the social stream of users fitting a specific demographic “persona”. The ads are full social objects, meaning they can be replied to and retweeted, multiplying the reach of the ad and lowering the advertiser’s effective cost, since impressions from retweets are not charged for.

Anyone with a Twitter account can launch a 140 Proof ad campaign network and start targeting an audience by defining keywords, locations, and influence criteria on Twitter.

140 Proof self-serve campaigns are sold on both a CPM and CPC basis, and advertisers with high-volume needs can upgrade to full-serve campaigns where creative, targeting, and optimization are handled by 140 Proof’s services group.

Current customers include brands like Microsoft, Infiniti, General Motors, Levi’s, AT&T, and Victoria’s Secret.

Adaptly offers one consolidated platform to complete a social media ad buy across multiple social networks including Facebook, Twitter, YouTube, StumbleUpon and more.

Founded in 2010 by Nikhil Sethi and Garrett Ullom, Adaptly was incubated through DreamIt Ventures and is now based in New York City. Investors include First Round Capital, Charles River Ventures, Lerer Ventures, kbs+p Ventures and more. Adaptly’s clients include brands and agencies such as PepsiCo, Diageo, News Corp., Razorfish and hundreds more.

How It Works

1. Planning: Adaptly helps you determine the right platforms for advertising based on your target audience campaign goals.
2. Execution: Adaptly executes your campaign from start to finish - optimizing the imagery and messaging in your ads for social effectiveness throughout.
3. Analytics: Adaptly provides you with the comprehensive analytics and actionable insights for your campaign.

Who should use it?

Adaptly is good for just about any medium or large brand looking to advertise across social media platforms. It requires a minimum spend per channel, therefore small businesses may not be able to afford it.

New Product: Momentum

Adaptly launched Adaptly Momentum in December 2011. Momentum is a new measurement tool created to help understand how well a brand is engaging with users across social networks.

Momentum combines the 160+ social metrics that come from each of these networks. It enables brands to evaluate how different marketing initiatives impact the overall brand performance across all mediums whether it’s paid or organic, online or offline.

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For more information about Adaptly, visit their website at adaptly.com

For more information on Momentum, see this blog post.

CrowdTwist is a social loyalty and rewards platform that engages and activates a brand’s audience wherever the brand is, both online and offline. It’s service gives brands the ability to track, incentivize and reward customer engagement across any online, social or mobile channel.

Founded in 2009 by Irving Fain, Josh Bowen and Mike Montero, CrowdTwist is based in New York City and is a graduate of TechStars. It’s client roster includes Sony Music, Zumiez, JC Penny, and Live Nation.

How it works?

Crowdtwist ties into all of a brands web properties - websites, mobile sites, mobile apps, Facebook, Twitter, Foursquare, and more. Users can then opt-in to the social loyalty platform through the site and receive rewards for their interaction and loyalty. These rewards are determined by the brand.

Benefits

1. Empowers brands to identify their biggest cross-platform influencers and understand how an individual customer is interacting with their online, social and mobile properties.
2. Shows a complete picture of user interaction as users connect all their social profiles. 
3. Grows audiences, strengthens engagement, monetizes users and increases online and offline sales conversions.

Who should use it?

Crowdtwist is best for large brands with established followings and social properties since it is a enterprise-class solution.

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For more information, visit Crowdtwist.com

Social Guide collects a ton of social data surrounding television shows and movies. This data is a huge asset for brands, networks, media buyers, and production houses.

Here are some use cases and ideas:

1. Social TV Guide: Networks should all license Social Guide’s data and implement an interactive, social TV guide where shows are ranked by the buzz surrounding them, and social content streams alongside titles acting as testimonials. Even better, users could connect their Twitter accounts and see what their friends are saying about the particular shows.
2. Biggest Fan Contest: Brands could install Social Guide fan widgets on any of their web properties and reward the most social fans after each episode. This would spark engagement and virality, while creating a fun experience for viewers.
3. Social TV Media Buying: Media buyers should consider the social buzz surrounding television shows when making their purchasing decisions. By buying spots on highly social shows, there’s a greater chance of amplificatoin for the ad as well.
4. Topical Battles: During any sporting event, you could stream content about the two competing teams side-by-side, and reward the fans that create the most chatter. This encourages virality, and would catalyze a bit of competition amongst the devout fan bases.

Those are just a few quick use cases for Social Guide. For more information, check them out at socialguide.com or contact me for a brainstorm.