Tichy - great idea! Along with the A Startup A Day idea generation site, I also have recently kicked off a new video show called A Startup A Week, where we take an idea and give a team one week to build it out and present it to angel investors. We've filmed two episodes so far and hope to do some more in the future - definitely fun stuff. http://www.astartupaweek.com

re: challenge #1. I saw something germane on the tubes, a stock exchange type structure (futures for artists or albums) with people choosing the right artists' futures being rewarded with music downloads. Can't seem to Google it, but thesixtyone sounds close

http://www.thesixtyone.com/static/about/

That sounds a little like http://amiestreet.com/ as well.

Sounds like fun, although one day seems rather short.

On the other hand, maybe something like the 48 hour Ruby challenge (or what it is called) would be fun. We could arrange a weekend to hack on solutions to the YC challenges.

He only said he's going to come with an idea a day, not actually implement it!

I see, missed that ;-) Still, I like the idea of a weekend-hackathon based on the YC list.

Since I am moving to a new city soon and need to connect, I might even make it a project to organize such an event. Is anybody in Berlin interested?

I'm near Berlin. So maybe, yes.

gtani - thanks for the link, that's pretty much exactly the idea that I was picturing in my head! I gotta check that site out, sounds like good times. To be honest, I generally try to stay away from music-related ideas on my blog, 'cause I feel like there are so many music sites out there that it's pretty difficult to come up with something that is A) original B) useful C) profitable and D) legal