This morning on Facebook I was greeted with this post:
Clicking on the link could lead to disaster. It's an old trick that's been around for a while, but it never fails to catch the unwary!
Clickjacking is a malicious technique of tricking a Web user into clicking on something different from what the user perceives they are clicking on, thus potentially revealing confidential information or taking control of their computer while clicking on seemingly innocuous web pages. A clickjack takes the form of embedded code or a script that can execute without the user's knowledge, such as clicking on a button that appears to perform another function.
What it is
About Clickjacking on Facebook PC Magazine article
ZoneAlarm – Clickjacking on Facebook