Firefox: You might be able to stop this by disabling third party cookies.
This site provides instructions on how to disable third party cookies in Firefox:
http://support.mozilla.com/en-US/kb/Disa…
Whether this actually works, I don't know. I don't have third party cookies disabled.
IE.x
1. Go into Tools
2. Click on "Internet Options"
3. Click on "Security" tab
4. Click on "Restricted Sites"
5. Click "Sites"
6. Type in the following two sites:
http://ads.bluelithium.com
http://ad.yieldmanager.com
also .. turn on pop-up blocker ,, settings "High"
check the "Allowed Sites" remove any unwanted sites.
maybe some help