Google's overall strategy is clearly that they want to flat-out kill Facebook in the same way that Facebook flat-out killed MySpace. You can't fault them for ambition.

Meanwhile, the amusement of the day: Randall Munroe (xkcd.com), changed his profile photo to be the generic Facebook icon. This caused one of the Google+ devs to follow up "I was halfway into investigating this as an ACL bug before I realized."