Rated 4 out of 5 stars
I can recommend ghostery.
The only bad thing about it is the annoying red badge next to the symbol.
Otherwise great piece of code what does exactly what it should.
Edit: Sorry if I made it sound unclear. I like the counter. I meant that the color is a problem. It's bright red and you always notice it.
you can turn the badge off from the advanced tab of the options menu.