Honestly most gamers are just weird, we all are. I went to like two conventions and you will see some of the strangest people ever. I saw one with dandruff all over his black shirt, sitting infront of me. It was so gross, but then another time I saw two guys and I'll never forget, they were twins. They were both the exact same weight, which was very large. I was like... what in the world, they are twins they must sit down and eat the exact same foods or something to be the exact same weight.
A lot of the "grils" I've met have been kinda weird too. Just a gamer thing. One thing I do notice though, is that as FFXI had gotten lower in population, there are a lot of extreme weirdos that stuck around or creeps. I think they are in every MMO, but because of our particular situation they are def more prominent here.
I have met a lot of really cool ones though, and actually a lot of people have changed over the years and are completely different now. You could probably write a whole book on it, and it would explain that dance party video...