I totally agree, myspace is annoying, but it's a good way to promote the band and to just spread the word in general. It's harder to get the word out with nothing but a regular website, so myspace can be a good complement to our regular web.
Personal pages on myspace seem a bit unneccessary to me, but no more so than any personal website where a random person writes a lot of shit about what food they like and how much they love their cat/dog or whatnot. That's just weird, why would I want to know that anyway?