When we first wrote about Go2Web20 on its release in September 2006, it was a side project of Israeli founders Orli Yakuel and Eyal Shahar. They thought it would be a nice way to show off their passion for Flash and keep a directory of new web startup logos and basic information.
The site proved to be so popular that the two have kept working on it, adding new companies and products (there are nearly 800 now). They've also changed the user interface substantially and have added Ajax components to the site. If anything, this is a fun site to just click around on and read about startups.
Logos can be sorted by date added or alphabetically. Clicking on a logo brings up basic information at the bottom of the page, and companies can also add their own code (a video, RSS feed, widget, etc.).
The site is also taking advertisers for the first time (we are advertising on the site to support this project). Information on advertising is here.