Boston-based DataXu, provider of a real-time online ad bidding and optimization system, has secured $11 million in Series B funding to add to the $7.8 million in financing it raised in an earlier round (April 2009).
The company, which was a finalist at last year’s edition of the TechCrunch50 conference and startup launchpad, raised the additional capital from Menlo Ventures and prior investors Atlas Venture and Flybridge Capital Partners.
I don’t have kids (yet), but I’d be all over this if I did … and if I were a native English speaker: TC50 finalist Story Something is cautiously opening up to the masses during the holidays – intentionally.
While the service is still ‘most definitely in beta’ according to co-founder and CEO Jim Rose, it gives you a pretty good idea of what the startup’s building.
We’ve all been there: the classic group photo, with twelve friends side by side doing their best to look as happy as humanly possible. The first shot is easy — but wait, the guy next to you has their own camera, so it’s time for another one. And then another. Soon muscle fatigue kicks in, and those happy smiles fade into grimaces as everyone wonders why isn’t an easier way to share their photos. Cue Clixtr, a new location-based photo sharing platform that’s launching today at TechCrunch50. The app is available on the App Store now, and you can download it now for $2.99 here.

The idea of adding a social network to any site is a compelling one. Currently, most sites do this by creating their own networks using service like Facebook Groups and Ning. But those obviously aren’t actually your own site, they are other sites set up under your site’s name. Stribe’s goal is to move the network back onto your site.
The service, opening to the public today at Techcrunch50, provides a free and easy way to place a social networking layer over any site. This layer exists on your site in the form of a bar at the bottom of the page. This is not unlike the Meebo chat bar that you may have seen on this site and others recently. But Meebo was really only about chat (and sharing), Stribe wants this bar to be a full-fledged social network on your site, including members, comments, and yes, chat.

While Facebook continues to grow, and some companies are getting more comfortable with using it for things like Pages, LinkedIn still fills the gap for users who want a more professional setting for social networking. A new service launching in public beta today at TechCrunch50, Radiusly, wants to take the idea of Twitter and put it in more of a professional setting, as well.
But unlike Facebook and LinkedIn which exist as two totally separate networks, Radiusly wants to integrate its service with Twitter. Users will be able to publish an update they leave on Radiusly to Twitter (and Facebook, as well). But the key selling-point is that in the Radiusly environment you can also do much more, such as have a professional profile, resume, sample works, and photos.

A lot of people use Twitter to have conversations with others, but that’s not really what it was built for. Initially, Twitter was just supposed to be a place to update what you are doing; the @reply only came around because people started using it to direct a conversation at another user. Now conversations are one of the most interesting things about Twitter, and a new startup launching in private beta today at TechCrunch50, Lissn, wants to build a new platform from the ground up with conversations in mind.
If you’ve seen the video demos or had a chance to use Google Wave at all, Lissn may seem familiar — it has the same type of real-time conversation aspect. The difference, of course, is that this is the main function of Lissn, while Wave is trying to be a lot of different things wrapped into one. Lissn is all about having conversations with people, and allows others to watch, and join in as they’d like.

Email. Twitter. Instant Messaging. Facebook. Those are just four of the most popular ways to communicate online. And actually, the average 23-year-old has 6 different accounts that they check for messages each day. Maintaining and keeping up with that is either basically impossible, or flat-out impossible. That’s where Threadsy comes in.
Launching its large beta today at TechCrunch50 as a free web app, Threadsy wants to take all of your online communication and shove it into a single service. All of the messages directed at you (email and Twitter @replies, for exmaple) will be put into a single stream of message, called the “inbound” column. Meanwhile, all of the activity streams that you simply follow (Twitter, Facebook, etc), will be put into a single activity stream, the “unbound” stream. The result is one service to rule them all.

Hark, a new startup that’s launching today at TechCrunch50, is looking to help friends share media and webpages with each other with as little friction as possible. The company offers a browser plugin that makes it easy to share links with friends, as well as interact though an integrated chat room.
The company says that there are plenty of link sharing apps, but when it comes to sharing a link from a webpage, there isn’t really a good way to do it — Emailing, Twitter, and other services can be a hassle. Hark’s plugin sits at the bottom of your screen, with a handful of buttons for sharing and a chat window that slides out of the bar. When you want to flag something as interesting, you can send out a ‘flare’, which immediately sends out a small notice to the rest of your friends that have the plugin installed.

Darth Vader’s fatherly coming out. Tinanic’s King of the World moment. There Will Be Blood’s sobering lecture on milkshakes.
Whether you want to poke fun at something, embellish a love note, or just prove a point, there’s probably a movie scene out there that can help you do it. People reference scenes all the time in their daily lives, and on the web it’s not uncommon for a blogger to accentuate their post with a particularly relevant clip. But for their popularity, there still isn’t an established site that’s known as the place to find a movie clip — YouTube and Hulu are always worth a shot, but they can be very hit or miss. AnyClip, a new startup that’s launching today at TechCrunch 50, wants to be the solution, with a searchable database of movie scenes.

One of the best things about the web — its constantly evolving, easily modifiable nature — can also be one of its most frustrating faults. Because usually when a website modifies its content, any changes overwrite what came before it, sometimes without leaving a trace of the old content. Perpetually.com, a new site launching today at TechCrunch50, is looking to solve this problem by offering companies a way to easily back up their sites.
The company says that every year, 5-8% of ‘bookmarked’ content vanishes from the web as pages are modified and removed. Perpetually helps solve this problem by recording a history of every change on your site. And Perpetually doesn’t just keep a copy of this content in an ugly search engine archive — you can actually view the content in context, as it originally appeared on the site.
