Hello.
I've attived social button in the k2 item, but facebook don't work. Twitter and google+ haven't problems instead.
This is a screen: screen
firebug detects it, but it don't want to appear.

Please search the forum before posting.

The like button will not function on localhost. It will function properly when you push your site live.

I searched this and other forums but without results :( .
However, thanks very much for information ;)