Demo Day: Y Combinator's Spring Chicks
techcrunch.com
techcrunch.com
Writewith: Google docs is a great application. But it is very limiting when it comes to collaboration. I have recently setup an article with an editor and 6 contributing authors; I know the collaboration on Google docs for such a project is going to be hell.
Octopart: I love vertical search engines since they have the potential to compete with mainstream search engines. Moreover, as an engineer and electronics enthusiast, I've always had trouble locating components, so Octopart will certainly come in handy. In fact, I am going to go ahead and recommend it to my EE friends.
Auctomatic: I am not a power user on eBay, but from the sound of it, this startup really has something going for them. There is a definite need for streamlining the process of listing on eBay. The downside is that their exit strategy is limited to eBay and perhaps a few other smaller companies.
Edit: BTW, I'd certainly be interested in chatting with the Tsumobi folks. It's a good idea - perhaps there are elements in common that can be reused from/added to Hecl, which is open source under a very liberal license, meaning you can take it and include it even in 'commercial' apps.
I really think that the 'common' bits in a space like that have to be either free or open source (think about browsers, html, javascript, java applets, etc...), and that that's not where the money is.
If you want fast prototyping for mobile I'd recommend using python on a nokia S60. Theres pretty much a full hardware api allowing you to access the camera, phone book, etc.
I've tried Microsoft's Photosynth and I was pretty impressed. I can't wait to see what the team behind View3 has come up with.
i hope to meet some more of you guys at startup school this month.
If anyone's willing to participate, I would love to set up something where current YC founders and potential YC applicants can gather, chat, and pick each others' brains.
http://www.cs.cmu.edu/~dhoiem/projects/popup/
http://www.ri.cmu.edu/pubs/pub_5164.html
http://www.robots.ox.ac.uk/~mukta/cvpr06/1123_Prasad_M.pdf
Some of these apps are very cool though!