Well I don't have facebook but I'd say Fanpop's better. It's fun to meet people with your same common interests! And facebook to me just seems kinda creepy. I mean anyone can stalk you!
Fanpop!! I dnt have a facebook account but I've seen my cousins go on and it's just plain boring!, I mean all tu do is chat there and here tu can RP and ask preguntas about your FAVE stuff and all that..
facebook is in a little bit of a "crisis" over a stupid page somebody made over a mes hace and 95% of the people are butthurt about it, so I'd say Fanpop.