Since this topic just got bumped, I thought I would share my current method.
I've begun to target my audiences rather than just shotgun'ing all over the place randomly.
If we're fixing to play an area, I'll do a 5-10mile search for FEMALES 21-50 and just copy all of the viewprofile links into a text file. then I'll take that list, copy it into an Excel spreadsheet and use the REPLACE function to replace the viewprofile link with an addfriend link. i will then add proper html tags in adjacent cells - copy all that back into a text file and save it as HTML. then it's just a bigass list of add links i can go through.
THEN i'll start hitting all the links a few weeks before the show. A week before the show, I'll view all my NEW FRIENDS and go through and leave them comments like "Thanks for the add! We're playing THE CLUB this Friday so come party!". It seems somewhat effective, I get a few responses and it's a more personalized way of promoting I guess.
Also, here are my Myspace Netiquette guidlines...
1. Turn of the fucking autoplay
2. don't post huge image comments like an asshole
3. if it fucks up your layout, get that shit out
4. you don't need a slideshow or more than one video
5. i forgot