Microsoft has launched a PC versus Mac campaign on Facebook, via its Windows Australia account. The page is under its own "PC or MAC" tab, where users can try to pick who the PC user is based on uploaded pictures, and then share their results with their Facebook friends.

There's even an option to upload your own photo and fill out a "PC or Mac personality survey" for others to guess "where your allegiances lie." In addition to the usual questions, the survey asks what you associate with (cocktails or beer, safety or risks, folder or "scruncher," texting or calling, dj or bands, voyeur or performer) as well as five yes or no "have you ever" questions (borrowed someone else's ID, forgotten mother's day, "wagged" school, gone skinny dipping, or snuck into a cinema without paying). Some of the answers are used on the main page when your picture is paired with another's so that users can pick who the PC user is, while the rest live in your profile.

Every week there is a HP Pavilion dv6-3030TX Notebook and a copy of Windows 7 Home Premium you can win for describing in 25 words or less "How you would use a Windows 7 laptop to get off a desert[ed] island."

Microsoft's plan is to break the stereotype that Apple started with its "Get a Mac" campaign that ended a couple of months ago (i.e., PC user = older business type, Mac user = young and cool). Last month, Microsoft added a PC versus Mac section to its Windows 7 website, and is now taking the trolling to Facebook.