This is a code snippet from one of the recent and popular spams on Facebook. The spam reads - "She lost control of the sharp axe and almost chopped her best friends head off. Click the link to watch the video". It mutates based on the browser being used, leveraging the hacks in each browser. I have recorded a video of how the spam spreads. Check this: http://www.youtube.com/watch?v=X5Uvg6XWiZo