Gothamist has switched to a three column layout. Main content is on the left, with supporting features and content in the middle column. On the right, you can find paid-content, like the personals section, and advertising. We've thought about making this switch for a few months- ever since we introduced the advertising on the site. Nick Denton has written a lot of good stuff about the way advertising will change weblogs and small content sites. We would argue that the three column layout is inevitable for any content site with advertising- just look at the New York Times. Anyway- EverythingNY made the switch first, and Nick moved Fleshbot, Gawker, and Gizmodo this week, so we're not setting the trend on this one- just following a good idea.
Also coming soon- Gothamist Forum. Anyway feel like doing some beta testing?