I met Xavier about a year ago because we ended up studying at the same college for a semester. I also met Cyberbunny last weekend, and we went to a concert together. I currently study in the city where he's from.
I've also met people from other games, and one of my closest friends started off as an online friend. I see no harm in meeting people you know online, as long as you meet them at a public place and have talked to them on skype and video chatted before. Safety is always important, you don't really know whats true or not.