It's becoming a holiday tradition: Google announces a holiday party for Silicon Valley reporters at its Mountain View headquarters, and Valleywag's invite gets mysteriously lost in Gmail's ever-canny spam filters. The invitation for the December 8 event, held again at the Googleplex's Cafe Slice, is nontransferable, so we can't accept any pass-along invites, alas.But here's a clever idea: The RSVP form allows you to suggest a colleague in your place. It would be a pity if jealous colleagues at, say, the New York Times filled out the form for John Markoff and suggested they attend in his place. I just declined on behalf of AllThingsD's Kara Swisher — though she could always crash as the guest of her wife, Google executive Megan Smith. Here's the full invite: