More from Mark Zuckerberg: He once more claimed a Facebook phone doesn't make sense, in spite of rumors (I, II) that it's building one. He also mentioned Facebook is handling 1B queries/day, and suggests Facebook will eventually build a search engine. Many have called on Facebook to enter the search market, and Microsoft (MSFT) execs reportedly once floated the idea of selling Bing to Facebook, only to have Zuckerberg turn them down. Should Google (GOOG) be worried? FB +3.2% AH. ZNGA +2.9%.