A lot of guys give up on MySpace, or really dislike it because so many women on it are not the type they'd go for, too immature, attention *****s. This used to be me, and I have only recently really started using myspace to meet women.
Let me remind you, MySpace is a fvcking GOLD MINE of women.
Yes the majority won't be your type, but I have seen plenty of interesting women online too.
MySpace is easy. I always send them a message, something about their profile, I keep it spontaneous, often times don't even say hi:
"Fvck yeah! Sweet I think I just found my soul mate, someone ELSE who enjoys dancing in their underwear too! Awesome!"
That's it. Something funny, usually that will get a friend request back. If not, I send another light hearted, personality conveying message and send them a friend request.
After that just casual comments, get her attracted by using your usual attraction tools eg. ****y/funny, small stories, observations, cold read them by using their profile etc...
If they have IM, get it. Usually all I do is leave them a funny comment, then at the bottom just leave a: "I'm sick of this MySpace sh!t, give me your IM".
Advice about ****y funny! Be careful with it! Online is different from real life, the point of ****y funny and being a bit of a jerk is to send mixed signals. To be a cvnt verbally to them, while you're validating them with body language, holding their hands, looking into their eyes, smiling etc...
But you can't do that online, you are missing a crucial piece of your arsenal, so be careful not too overdo the whole "jerk" thing.
After getting IM, I build some rapport with them. Usually I'll talk about how most men are fvcking clueless when it comes to women and I'll be embedding that I'm different, something special. I'll talk to them about the pressures from society and being a woman, and I'll embed that I understand them and am discreet.
After you have a connection, snap back into fun mode. Set up a quick date, usually I'll say: "It's weird, meeting someone on MySpace, but I'd like to think that all the hours I spent on MySpace had some good come out of it!" (Be careful with this as it may convey that you are a MySpace addict, it works best when you actually AREN'T online a lot)
As you set up the date via IM, grab her number.
I did this not 2 days ago and it worked perfectly. MySpace is easy, don't give up on it.