Dang, I'm going to have to stop sleeping on the weekends if I wanna keep my points up there ;)

I've got a few forums on phpBB, and I'm happily migrating them to bbPress now that it is past 1.0, I'm so sick of spammers I don't care what I have to "give up". I don't need private messages, signatures and all that other stuff, I'd gladly trade them for Akismet!

The thing that disappoints me most about phpBB is it's age, it's slow and lumbering, and has a real upgrade like every two years. That reminds me way too much of Windows...

It really depends on your specific needs though. On one of my sites, i have a rather active phpBB forum, and the main site is in WordPress and not very active. I have several authors on the WordPress site, and they are moderators on the forum. So it makes sense to have that all under WordPress/bbPress with integrated login. I am hoping this will also encourage more people that are already logged in to the forum to comment in the blog since they would be logged in there as well. I also like having more options for pulling the latest posts and threads from bbPress and promoting them in the sidebar of the blog.