Annoying popup

[taxiapple]

Sorry if this posted in the wrong forum, I'm not sure where to post it.

Starting today I'm getting an annoying popup only on Macrumors

It's kinda purpleish, doesn't make sense, say's "collective media" on the first line. No Idea what it is but I don't like it.
If this stays, I will frequent Macrumors far less.

How do I stop it?

Actually it is not just on Macrumors , also happening on CNN.com

 

[Hellhammer]

If it's happening in other sites too, then it sounds like you may have some malware in your computer (especially if it's a PC). Try reseting the browser you are using.