One of this tech giant's side projects will soon be a major profit center.There's no denying Alphabet's (GOOG -0.02%) (GOOGL 0.10%) third-quarter results were terrific. Not only were the company's top and bottom lines higher on a year-over-year basis, but each topped analysts' estimates as well.Alphabet stock's surge following the news, however, added to already big gains that first began materializing a week earlier. Thanks to the post-earnings pop, Alphabet shares are now up an intimidating 12% in just th ...