I don't consider anyone on here a friend. You guys are all either knowledgeable, trolls, or somewhere in between. Sometimes I agree with people, laugh at their gifs, or pick fights based on disagreements.
I think that's just Sherdog though.
But to answer the original question, I have probably a dozen or so friends off the top of my head I could call up to catch a PPV at a bar, invite over for a PPV/Bellator/FX/Other org fight night, or would host one. Some more into it than others, some bring more people into our little group and make a fun night out of it.
Either way, I get on here afterwards, more often than not after drinking a bit, and post topics we discussed watching the fights.