I've just started creating our site here (located below), and have been taking time to look at and follow several campaigns that are pretty impressive. The community here seems very supportive so I'd welcome any feedback or suggestions if you care to give them.
I'm currently running a Teen Superhero campaign for Mutants & Masterminds called Olympus Academy 90210. We've got Adventure logs, some wiki material and some characters so far. Our hope is to have a fully fleshed out city soon and then even open up the campaign to people for play-by-post as well.