[GoodIntentions]

https://www.requestpolicy.com/ is useful in this regard as well. - Firefox plugin to block cross-domain content.

lots of websites pull shit from 20+ 3rd party domains. An obnoxious number of sites block/don't render completely ( or at all ) without allowing shit from all over the web to load.

[Tanath]

I used to use RequestPolicy, but found Policeman is better.