Unless it was intentionally stupid, they are trying. I have to disagree with Doostang.com. I've heard a lot of good things, and the other sites are the beginnings to good ideas. Usually, 2 or 3 sites have to start in a certain direction, before another one gets it just right.
For Doostang, LinkedIn is a forerunner to better sites, or it's the successor to Monster, HotJobs, and the like.
I hear good things about Doostang. They appear to be a good source for finance/VC/private equity/hedge fund jobs. Not sure where it goes from there though.
That name is just horrible though. I'm not even going to write what it sounds like; but more to the point, it's totally non-descriptive unlike LinkedIn, MySpace, or Facebook, which is counterproductive for a social networking site.
Edit: Of course one of the founders is named Krapivin...
For Doostang, LinkedIn is a forerunner to better sites, or it's the successor to Monster, HotJobs, and the like.