I guess I became a stan in 2005, but I had no idea that term existed.

Danity Kane (2005 - 2009)
Rihanna (2007 - present)
Lady GaGa (2008 - 2011)
Selena Gomez (2009 - present)
2NE1 (2009 - present)

I'm really enjoying One Direction's music atm, but I'm not sure if I consider myself a stan yet. There are so many artists I love, but don't consider myself a stan (Taylor Swift, Demi Lovato, Girls' Generation, Wonder Girls, Justin Bieber, Mariah Carey, 4minute, and so many others.