I came across a story recently which amazed me. I've seen this behaviour myself where some people tend to use Google to then search for Facebook and click on the result, as opposed to actually typing www.facebook.com into their browser's address bar.
Take a look at this website: http://www.readwriteweb.com/archives/facebook_wants_to_be_your_one_true_login.php
You can quickly see that it's not Facebook.
However, that hasn't stopped lots of retarded people from posting msgs on that completely unrelated website saying 'Please let me login to Facebook' without realising that it's not Facebook. The stupidity of some people amazes me.
Enjoy reading the comments, although some are not safe for work.