I've got one...I use it just like AIM and other new age communication technology...rarely.
Actually...I run my myspace quite a bit, but I'm not one to post bulletins begging for comments and blog kudos. It's nice if you use it in moderation, or for the right purpose. Just like Internet chatrooms, it's fairly certain you won't be getting a date from myspace anymore, so why use it like that? I've found a ton of people I wouldn't have otherwise made contact with using myspace.
However, I have been browsing around and I'm seeing a lot more kids under 16 on the site. I know you can turn your age back to 14 to set your profile to Private, but I'm talking about kids probably in 6-8th grade on there. It's a cool site, but it shouldn't be spanning that far.