That was fast. Not only has BoomTown confirmed our earlier report that Elliot Schrage, Google's top flack, had interviewed at Facebook; he's been hired, too, according to an internal memo sent by CEO Mark Zuckerberg from India. Which is odd: At a meeting earlier today, asked about the Valleywag item on Schrage, COO Sheryl Sandberg feigned ignorance about Schrage's interviewing for the job, but talked up what a great fit he'd be with her, given their shared Harvard, D.C., and Google backgrounds. First Sandberg threatens to shoot Valleywag, and now she's agreeing with us? At least one member of the Google PR team concurs with Sandberg on this much: Better that he go to Facebook than stay at Google.