So far so good, Ghostery works silently in the background, I am unable to realle check but I trust this extension to my browsers does what it says.

Always used as a complement of my adds blocker on all my internet browser and has always work really well ^^

Simply put, one of the best ad-blockers around; probably the very best.

Ok

This is the best adbloquer/tracking add-on, this allow me to easily skip almost all annoying URL shorteners