Netflix asked for it before it would let me stream HD movies over WIFi to my 13", 4 GB, 256 SSD, 2.13 . Any downside to installing this Microsoft Software? Coming from the PC world and wanting to maintain the pristine nature of my MAC's I'm reluctant to install ANY Microsoft products on the MACs I own, like Microsoft Office 2011 for instance. Any downsides to that 2011 MS Office program on a MAC? I need MS Word, Excel and Outlook would be useful too.