I noticed that Yahoo is doing a BETA test of a social networking platform similiar to MSN's MSN Spaces called http://360.yahoo.com/. For people have trouble getting ranked in Yahoo this may be a helpful solution.
Yahoo is soooooooooo far behind!! They do everthing after its been outdone and is not "new". Basically copy everything and just put it in yahoo style. The only thing I like about yahoo that was really fun, was yahoo POOL!
It's interesting. I try to have a site hosted in all big players, and even if it wouldn't help regarding ranking, it surely helps regarding crawling. They know how each blog or site is organized, and are optimized for their crawlings.
Samibaba, Yes, Yahoo is far behind every other networking site but it has the potential to be large network. I have never been a fan of Yahoo but since my main site is in their dog house using the network can get me Yahoo links.