Beware that some messages being sent to Facebook user's inbox contains a link to a fake YouTube video that is dangerous:
"I just received a Facebook message from a friend; it was a pretty standard one that is beginning to look familiar to a lot of us I am sure.
Figure 1. Fake Facebook message
What surprised me though, was the page that the link led to. On the face of it is a very familiar looking spoofed version of YouTube, complete with bogus comments from “viewers”...
Read the rest at TrendMicro Malware blog