A quick search for "Microsoft FUD" brings up all kinds of nonsense. Most recently, M$ shipped materials to Best Buy extolling Windows 7 and trashing Linux (with largely incorrect assertions). Ridiculous. I do love that M$ is admitting that Linux is "competition." :-)
If you've never tried Linux, you can do so without making any changes to your computer. You can download an entire Linux operating system and run it via a Live CD. I highly recommend that you try Linux Mint, but there are many other options. There is no shortage of help out there and the Linux community is amazing. So, what are you waiting for? Give freedom a chance!