Much has been made of Google's supposed "entry" into the desktop operating system market next year as a direct warning shot to Microsoft. Some people are speculating today that the timing of the Chrome OS vaporware announcement coincides with a Microsoft announcement on Monday, which will bring an online version of Microsoft Office. The dramatic angle is that the companies are gearing up for what could be a slugfest, both in the operating system world as well as the search space, where Microsoft's Bing search engine has surpassed some web2.0 companies in terms of traffic. Are the two companies really about to do battle? We ask Seth Porges from Popular Mechanics, and Tom Merritt from CNET. Distributed by Tubemogul. Less