Unwanted "ads by selectionlinks" on my computer?

[Jordan]

On Facebook and Youtube there are these extremely annoying ads that have just recently started showing up, at the bottom of the ads they say :"Ads by SelectionLinks." I'm pretty sure it's something on my computer, I actually removed something called selectionlinks from my programs, but it didn't make a difference. I've noticed that the ads show up when I pull one of the two websites up on firefox or chrome, but not internet explorer, that's what tells me it's my computer, and also the fact that I haven't seen any complaint about any huge new ads one facebook or youtube anywhere. I'm running windows 7, please help me get rid of them.

[JJ]

Okay, two options here. 1.do a system restore to a point before all the ads or any strange files showed up.
2. Get Microsoft security essentials and use it to get rid of the virus, if your computer get a critical error cycle from trying to remove the virus or Trojan, immediately do a system restore to at least a week or two weeks back if possible. Hope this helps!

[Chalcocite Ct.]

Turn on popup blocker in your control panel/ internet options/ security settings, or open firefox, select tools, options, content. Google chrome click on settings tab upper right corner, select settings, advanced settings, content, scroll down to popups.