hmm msn favor fresh content? what you mean by fresh content? new site? Well seems like my forum is already having tons of keywords? Google indexed my site very fast unlike yahoo. Msn haven even come LOL
With Yahoo dumping off their search team to Microsoft early next year I would focus more on Bing. Yahoo will definitely modify the results but why focus on a search engine that's going to be shifting in a few months? Just a thought.
I have a web site, It have not been indexed by yahoo,but indexed after another domain name,maybe your domain name is not welcome by Yahoo