[cpeterso]

What does Facebook Blocker do that Ghostery (combined with AdBlock Plus) doesn't? Are these redundant extensions?

[slowpoke]

Ghostery is a general tracker blocker. FBB only blocks, as the name implies, Facebook related stuff - at least that's what I infer from a quick skim through the description.

So, if you only want Facebook gone, by all means use FBB. If you don't want trackers in general (Google Analytics etc), use Ghostery.

[mason2]

What about an add-on designed with the only purpose of implementing this 2-Click solution?

https://addons.mozilla.org/en-US/firefox/addon/2-click-like/

:)

[rjd]

Probably, I just had a look what I was currently running and noted them down. Could probably do with uninstalling it ;)