BizTravel: first public StackExchange beta site
biztravel.stackexchange.com
biztravel.stackexchange.com
Someone, I'm sure, will take travel Q&A far more seriously than I did, and get someone like Rick Steves or a big travel site like Orbitz or TripAdvisor behind it, and that'll be huge. Either way I'm pretty confident that Jeff Atwood's goal of having knowledge exchanges like StackOverflow replace crappy old PHPBB sites everywhere on the Internet is pretty much inevitable and this will be a huge opportunity to create new communities where old entrenched ones used to be locked in.
I can think of these sites I'd visit:
Car repairs/advice, Graphic Design, Business advice (freelanceswitch will probably be someone to approach), Marketing, Maths, Food/Cooking/Recipes, Cocktail Mixing
Sites that will work: Crafts, ESL, Athlete/professionals training advice
The pricing will need to drop for smaller communities to make the port, and include a donations feature to help communities fund themselves.
Just realized, I'm actually asking a question here.. how would you kick off one of these sorts of sites if you wanted it to become popular? Pre-populate it with a fake community? Get a group of friends to use it in anger?
Planning to try it out.