Anybody have any experience dealing with Yahoo Games and Microsoft Zone?

I was looking for any contact info to at least ask if they consider listing shareware games, but couldn't find any. I guess it keeps time spent on customer service down. :)

I realize that both host the Gigex Top 50 list for downloads as well, but I don't think that the high price of the Gigex list would be worth it (correct me if you've had other experiences, please!).

I'm just curious if this is an avenue worth exploring, or if you should just not bother unless you're Pop Cap. :)