It's a number of things really. Some people lose interest, things happen on forums causing people to leave, and life happens. Hell, I just went through my first year of college and only signed on here to post a few times a month, if even that much. Throughout that whole time I still listened to Alizée's music nearly everyday. Just because I wasn't here, doesn't mean my adoration faded any.
EDIT: Speaking of people who aren't around anymore, I miss Moe and Riva
