Myself and a fellow colleague were discussing this earlier this week. I had stated how easily it appears Y! is being manipulated and how important domain and title appeared to be.
I haven’t targeted Y! for serp ranking yet as its too new and hasn’t proven itself to a great # of webmasters yet as producing substantial quality traffic in substantial quantities – least I haven’t heard about it doing so.
Thus, I don’t really have any listings worth writing home about, but I can assure you once they straighten out their algo and start producing I will take some time to move to the top 
I agree with both of your observations – yahoo is presenting a bunch of crap. :shaun: