I don't keep close tabs on my MSN SERPS, but I have noticed more organic hists from both MSN and LIVE today. Maybe our site got a higher ranking in their SERPS update.
A couple of my sites have been wiped out from the first 10 pages of results while other sites are doing a little better than before. I am sure this is a SERP update.
I think MSN and Live are improving, people are taking interest already. Few traffic from there for me but better than before.
I get very little traffic from Live or Yahoo, but I'd love for that to change. It's never good having all your eggs in one basket (Google).