Ever wondered why your friends were posting spammy links on Facebook (or maybe your profile has done it too) - and what to do about it? Here's the answer:
Many of those links promising a look at outrageous videos or photos are part of a “clickjacking” scam. In this situation, the user is typically tricked into clicking on a provocative link, but hidden code within the page posts a copy of the tainted link to the profiles of all the user’s friends.
Want to know what you can do if you think you've been clickjacked? Head on over to the New York Times for the full advice.