According to multiple sources speaking to Fortune, Google also made a hefty offer for the WhatsApp messaging service. Of course, that reported offer looks tiny compared to the winning bid: Google offered $10 billion, with no promise of a board seat for WhatsApps founder and CEO Jan Koum. Its not clear when Googles offer happened, or whether WhatsApp seriously considered it. But we do know a bit more about what interested Facebook in the company in the first place.