You can give
www.musicianforest.com a try, but it's sort of a slow-motion site .... gotta do a lot of searching and the sign-in is laborious. I'm definitely NOT a fan of craigslist, far too many whack-jobs with little to no talent, or as stated in the OP, too many "we're gonna f-in rock the world" dopes.
I gig a lot. My busiest band is a classic rock group, I also work somewhat steady with a power jazz trio and of late I've been doing more and more straight jazz gigs (duo's to quintets) with a keyboard friend of mine. The thing that has really helped me make contacts (besides being 300 years old and playing forever in this area

) is taking every opportunity to get my info in
any other musicians hands. I have my own web site (not a myspace page, but a web site), I always carry demo discs of my playing in a variety of styles, and I have no problem doing "self-promotion" ....
There used to be a pretty good site called gigfinders.com but it was shut down a year or so ago ....