One way to get some free advertising...
... come out with a product that's completely cuckoo for cocoa puffs (yet probably strangely practical at the same time).
Cue up Google's Mail Goggles:
My former housemate had a few mornings when she'd realize she'd succumbed to the dread "drinking and dialing," and I'm pretty sure there may been a few regretted late-night emails, so she may very well be happy to see this.
Who knows if it'll help Gmail get any more competitive against rivals, but it sure is entertaining and seems to be getting instant attention. (Then again, how useful? Can't you imagine somebody in a drunken rageful haze cussing Gmail after he or she fails the math problems and desperately loading up their long neglected Yahoo! Mail? How about a Yahoo! ad: "We don't make you do math at 2am." Haha.)