It's odd how fandom works. Usually it dies out about a year after a series ends — for example, most communities for Full Metal Alchemist are pretty dried up now — although if it's a game, it usually will last longer since it's a one-time release. Bigger series like Star Trek or Harry Potter will last for years thanks for new members constantly refreshing fans who left. I went through my old Tales of the Abyss communities, and it was really sad to see all the links to livejournal accounts are closed and purged or the links to fanart are broken. I guess creativity and interest dry up, but I wonder sometimes how everyone else is doing.