It's been highly amusing watching Yahoo step in it over the Microsoft proposal - I just hope they aren't deluding themselves into thinking that anything less than $6 - $8 of their current share price is due to speculation the deal will come back on.
Will it? Ballmer has taken some heat for how this was handled (one of his folks reportedly called MSFT's handling of last weekend's events "amateur hour" - ouch!), but if this was a tactical play by the mercurial Ballmer it may have been a good one. Yang and Decker have been falling over themselves to say they'd still be happy to deal, and have all but admitted Yahoo would take $33 a share.
So - there's still a decent shot this deal gets done. The price differential just isn't that great. Frankly, I wouldn't be surprised to see it get done for a buck or two less than MSFT's last offer of $33 when Yahoo comes back hat in hand to revive the deal.