I doudt the Harry Potter fandom will ever die out. There's too many fans and they are very creative. We have 2 more movies. Deathly Hallows will be released sometime in 2010. The fans have fanfiction, fan art, Wizard Rock, and PodCasts. And JK Rowling left us plenty of things left unexplained, so we have plenty of thigs to discuss on the forums. Any ways, that's my 2 cents . . .
Out of curosity,MTNGIRL: which PodCast do you listen too? I'm a PotterCaster myself. But I listen to MuggleCast occasionally.
I'm on my 3 round through of the entire series. It never gets old.