I have a handful of WP blogs, for myself and a few of my friends, and each is a separate installation of WP 2.0. I've batted around the idea of consolidating them into a single WPmu setup, as that would make maintenance on my part easier. Are plugins and themes for WP2.0 compatible with the MU version of WordPress? Would I be able to offer people abilities to customize their blogs, but be able to control plugins and spam filtering things for everyone from one control panel?
Finally, how close is WPmu to the current WP version? WP2.1 just came out - does WPmu reflect those changes? Thanks!