However, I will say the Personals are rather bottom-of-the-barrel...
...and how do you know that???

The Rideshare section is great, and I've used that alot. I've met some really cool people that way, too.
For musicians, it sort of depends where you are. The smaller the town, the better it probably is because there aren't jams or a college to get really good connections.
In larger cities, it's pretty lousy. The good musicians usually already have good connections, so why would they need to go onto CL for a new drummer? For truely professional level gigs and situations in bigger cities, CL is pretty much a joke, with the very, very rare diamond in the rough. In smaller cities, it can be a pretty good tool.