TOPIC: FFGATE works on articles?

Hello,
I've tried to find this information but couldn't..

I've understood that FFGATE can help me creating a landing page inside facebook but on a specific tab only, not the whole page, and I'm not sure if I've understood it right.

Second I was wondering if FFGATE can be used to LIKE-GATE some joomla content like, for instance a K2 article. Imagine something like "press like to see the full article".

Thank you for your assistance,
Carlo