I wouldn't say Dolphin is slow; it depends on your server performance. Dolphin is slow if running on a shared server, but it shouldn't run on a shared server. I think its crucial that it runs on a dedicated server and this can be expensive indeed. Facebook is too big and the fact that everyone's on Facebook is its biggest Achilles heel. I like to hang out with my friends at a place where I define the content and this is possible with Dolphin:-)