On: Here's how you can opt out from 100 different online ad networks in one go

[jessor]

Yea, i use these entries, too. Sadly, it breaks some pages functionality.

I was shocked to see that, when you are on paypal.com and click to register a new account, it routes you through some dubious ad network. Scary shit.

Saw this behaviour on another rather large site the other day, can't recall the URL though.