The fact that Facebook had a dedicated messaging app up its sleeve for Windows will go down as one of the worst kept secrets in the history of techdom. In fact, after the client leaked back in December, Zuck and Co. unceremoniously dumped the executable on the web, opened up the help page and did so without an ounce of fanfare. Now the program is getting a proper launch, complete with a landing page and a press release (which you'll find at the source). Th
