Ghostery or ad block browser ad ons are good.
I use ghostery and don't have those things showing up any more - it is annoying and I didn't like it a bit ..felt invasive/spying LOL

https://addons.mozilla.org/en-us/fir...vacy-security/

Nice thing is you can try some top rated ones to see if you like it and then easy remove if not to your liking.. then try another til you find a good one for you.

Also the no tracking/privacy search engines are good too.

[5 Alternative Search Engines That Respect Your Privacy]
http://www.howtogeek.com/113513/5-al...-your-privacy/