StackOverflow started as software developer Q&A site. The traffic on the site spiked like mad and stayed that way. Then, its founders, Joel and Jeff, had to buy a warehouse to keep their VC money in. Now, they've begun rolling out verticals.
Today, the latest version opened for private beta. GIS StackExchange is for people involved or interested in Geographic Information Systems. The beta is restricted to members of the Area51 GIS community but the public beta will begin on the 29th.
The verticals are being produced in a very consensus-focused way, which fits the cooperative nature of the original. The Area51 site hosts a large number of proposals for new roll-outs. Among the hottest proposals are a lot which are tech-oriented. No surprise there. What's surprising is how many are not. These include Food and Cooking and (be still my beating heart!) English Language and Usage.
Via Jason Birch