Honestly....
By April 15th Yahoo will announce their earnings....but something tells me that they'll get an endorsement (sell out) by someone large (News Corp, AOL, Google, etc) to make their valuation seem larger than it is...and then tell Microsoft to bring it...
Make themselves a huge albatross and then try to weigh down whoever wants them....they already did it with their severance packages, their value is just next...
Elsewise, April 15th will roll around and they'll announce a poor earnings report, Microsoft will just wait till Yahoo starts auctioning off pieces of itself and then Microsoft can pick what they want...
Flickr - Ya....Search - No....just as an example...
Or they'll go the proxy fight manner, but once Yahoo! knows their valuation is going to be poor they'll pour on the acquirement benefits to their employees....dump all their current positive flow into their employees and then let them all quit/layoff with huge packages...
That way when Microsoft does acquire them, then they'll either have to pay outrageous salaries (Jr. Software Engineers making $100,000) or lay them off with packages worth $100,000.
Kinda mutual assured destruction but the employees benefit from it.