Many rumors runs on the web after the deal with yahoo fails:

$15bn takeover: http://business.timesonline.co.uk/tol/business/industry_sectors/technology/article3890497.ece
http://www.smartmoney.com/Techsmart/index.cfm?story=20080509-microsoft-eyes-facebook&nav=ibs&ibshatkey=sac

Acquiring Facebook? $15 billion.

Acquiring Yahoo? Way more than $44 billion.

Innovating from the inside instead of trying to buy other companies? Priceless.

Every one Acquire, someones acquire eggs others acquire kitchens.

But Facebook is really an impressing network and owning it can help you to improve your other services. For example integrating Messenger in Facebook simply mean more regular users.

kitchens???
chickens