Google's IM service foreshadowing Skype buyout? That's what tribeworks seems to think at least. Google did just recently announce they're are planning to sell $.2 billion worth of stock which gives them a huge stockpile of cash to work with and Skype did just turn down a $3 billion offer from <s>tech wunderkids</s> News Corp. The logic is, Skype would give google a major advantage in the VOIP game as well as provide them with a potentially large ad-based revenue stream.     ¶ 6:16 AM