What is Ghostery?

Definition
Ghostery is adblock software blocking ads via tracker identification.
Meaning explained
Ghostery is adblock software that checks calls between webpages and various web servers. If a match is found, users are informed. Users may also configure Ghostery and enable interupting those calls from browser which in effect blocks ads.
Links
For download and more information on Ghostery, visit Ghostery’s official webpage.