Sorry for the pointless status, but here are the YouTube accounts I've had so far:
heart1987 (2006-2007)
UniversalTVfan1994 (2007-2010)
ilikecats1994 (this was supposed to be my back up account for the second one. It is now inactive) (2008-2011)
Caitlin Marie which is my current one (formerly KittyLover1061994 and CaitlinMarie94) (2010-present) 

So yeah, that's pretty much it.