Can Yahoo! compete with Facebook? I'm not sure if their site offers any novel uses for "networking." Here's the article. If you want an invite, go to this link. I'm not networked out, since I just joined Doostang (a combination of FB, LinkedIn, Monster), but I don't want to join if it's going to be an exact replica of Facebook, which seems like what Sean P. Aune is saying. I'll pass for now.
So far, I really like Doostang. I'm reading more of the discussions. So far some interesting topics are "how to obtain a venture capital technology job" and "seeking your opinion for two job offers." The jobs offered on Doostang are targeted for business people, but they're higher-skilled jobs as oppose to Monster, such as "buyer for some major retail store" or senior analyst positions, all requiring MBA's. Some of these jobs require you to be in some kind of group, which requires you to add 20 friends to your network, which seems to be a bit of a paradox (since the community felt the small world network). Anyway, I have yet to explore this site.