For me, Myspace is a good place to keep in touch with certain people. I can set my settings so that I only get messages or requests from certain people, and it's a nice way to kinda collect all of the people I care about in one place where I can easily communicate with them. I don't like to just give out my email addy to everyone I know, and more often than not my email is just innundated with bullshit anyhow. If I've got pics or video I want to share with my friends, then it's easy to put it up there to share, without having to send out emails to all of them, and also allowing me to share only with people I select to be on my list. I know Myspace gets a bad rep but I find it pretty useful.
Also, along with things like this forum, Myspace is a good place for fans of the band to look me up and make contact with me if they want. I've met alot of cool people from all over through Myspace.
I get pretty agitated when I get friend requests from people who never try to make any sort of contact with me, they just want to add me to their list I guess. That seems pointless. But overall the experience has been more positive than negative. It's also a quick and easy way to check out other bands and sample some of their music.
I signed up for Facebook, and the layout is a bit annoying. I hope they rectify that eventually.
I hate that term "stalker", too. I think that's one of the most misused terms around. The guy who goes and checks his ex-girlfriend's page every day could be construed as a stalker, I agree. But the guy who decides to look up an old girlfriend or friend to see how they're doing and reconnect with them shouldn't be construed as stalking, though so many people call it such.