New forums
I've got some new forums, go check 'em out. I'm running bbPress. It's not as sexy looking as Vanilla but it has tagging, better RSS feeds and integrates with WordPress nicely. I like the layout more as well.
The integration with WordPress is the main reason I switched. I want to offer "bonus" stuff on the main site for users who are logged in and this seemed like the best way to do it.
Importing the old forums was a nightmare of course and I'm still cleaning things up. Your old accounts should work. Let me know if you run into any problems.