I have a page for Clearlake and in that respect I'd say it's pretty handy - the word's getting out through that as much, if not more, than via the website. When the album came out, I mailed the friends list - so 500 or so people got the message at once! I figure if I don't do that too often (that's the only time to date), a lower percentage of people will delete on sight.
So for people, it's an odd thing. For bands, I'd say pretty good. A shame Rupert Murdoch owns the whole enterprise now.
Clearlake's Myspace page (if you'd like them as your friends!)
The sheer volume of stuff I get through that though - friend requests (nearly 800 and about another 20 a day now), mails (some for me, most to be put into e-mails and sent to the band and/or management), the live bit, the promo stuff in the blog - it's like running a fanclub. Not for the faint hearted...