Unfortunately I didn't have the time to cover the start-ups when they were launched, but some of them looked pretty funky. EpicTweet particularly looked interesting, from a "hey, that's cool", perspective.
Most of the auctions are still at minimum bid $100 (reserve price, according to TechNation, is $250), but ActivityHorizon, a start-up which allows people to search for activities and events, with "evolving functionality based on their location, interests and friends" has beat reserve and is up to $500 at time of publication.
GiveDo.com, which purports to make it easy for charities to earn income through search advertising, was up to $450 this afternoon, and iTrafficApp, an iPhone application which helps users anticipate traffic delays and RTA cameras, is up to a huge $999!
Check out the auctions at SitePoint.com. I thought about bidding for EpicTweet, but when I tested the site out I ended up finding its output ... less than epic.
I'd love to hear from anyone who buys one of these start-ups when the auctions finish; what will you do with your new toy?