When I heard about Buddypress and WPMU, I was really eager to start working with these platforms... now, after adapting my wordpress single website to this new system one month later, i'm getting internal server errors and extremely slow performance. Come to find out (through a conversation with my server provider, Dreamhost)...
WORDPRESS MU CAN ONLY BE INSTALLED ON A PRIVATE SERVER!
Dreamhost requires us to upgrade to "Dreamhost PS" ($$$) and, from what I have seen in the forums, GoDaddy also requires an upgrade. This seems like vital information to have BEFORE going through the installation process. There were no warnings along the way, which is extremely disappointing to me, especially since I trust the Wordpress community so much. I only want to prevent anyone else from experiencing this.