It's just a rumor, in fact, it feels more like speculation than anything backed by a reputable source; still, there's a Google / Sprint buzz getting a lot of play this morning. Rich Tehrani is reporting that Google is considering an acquisition of Sprint Nextel in order to grow its mobile business. Of course, Google has long touted the importance it places on mobile ad revenues, made all the more evident by their recent preparation for the 700MHz auction and the figurehead role Google now plays in the Open Handset Alliance's Android pl