FB will be another YAHOO. Chief designer at FB is leaving, IF FB wants build serch engine with YHOO, it can not be better than GOOG
YHOO failed miserably. MSFT wanted to buy YHOO and YHOO not interested. Now YHOO CEO-Melissa and Sandberg are buddies at GOOG and they can not build better search engine than GOOG. GOOG will file a LAWSUIT if any designs in the new search engine will include GOOG designs. So FB will be wasting time and Money going for SEARCH ENGINE.