Beware of the Facebook Friend Email Scam
You get an Email looking like the attached where someone wants to be your friend but the link leads to another site. It is referred to as "phishing" and if you enter your passwords at the wrong site they can retain it and use it later to hack your account.
Facebook Friend Email Scam (Hover)
I get some of them also like this but if you hover over the link it goes to a phishing site.