I've had many usernames. I'll explain my alts, too.
So, I signed up as simpsonqueen on November 15th 2005, because it was going to be nicadogs, but then I chose simpsonqueen because I liked the simpsons.
Then I changed it to ×× Nica ×× about October 2006, because well, Nica is what I was known as and the ×'s were pretty.
I created an alt, Kawaii (which turned out to be my main alt, known as Hakeen right now) in April 2007, because I wanted a brand new identity, and that seemed the most unlike me. What was next... I'm pretty sure I used Nica-chan next, because I followed Tali's "Tali-chan", and I wanted to pay tribute to her somehow. I remember going back to simpsonqueen at some point because other people were going back to their past usernames, which I believe was in late 2007. I also created an alt, pokmns r the rulerz, but... I forget why exactly I did it.
Then, during January 2008, I created ×× Nica2 ×× (which was Bellossom back then, named that because it was supposed to be bf's username or something.) However, Bellossom got swapped to my main account. About a month later, when the usernames were reset and anyone could change their username, I became HOPPING FROGGY KISSES, which Kenji suggested, and I just found it hilarious. In April 08, I created another alt, ayepreel-fyewls. Then about May, I created Arrived, copying Went, while bgt created Came, posted a few vms on it, then I basically adopted it, (since I originally intended to get Came, but bgt beat me to it.) I then signed up as Devil, because bgt was known as God then, and Malyka had Satan. I also created Fifailre at some point because I thought it sounded good. Then about July, I changed to ıиғıиıτızεd because I wanted a unique username that was also based on TCTI. In October 2008, I changed to Forever, because ever since July of that year, I loved the song Forever by Chris Brown. About November or so, I created I'M GOING TO BED. because Malyka typed it in a conversation and I was bored.
In January of 2009 I created goldandplatinumisgreat! for... reasons that I don't want to specify, although I cannot remember the password. I kept Forever until about March, when I changed to Nurse Nica, because Signomi's alt kept on calling me her nurse (I think this might've been due to one post by Went, I'm not sure.) Then, instead of changing back to Forever, I opted with Hakeen in August, due to popular demand. I also created I WANT GUMMY'S BABIES, which was a strange username. I created Four, November Sky, Not Yuyuko and Jay Sean about November. I chose Four because I loved the number, and still do. November Sky was because it sounded pretty, and I randomly mentioned it in a conversation. Not Yuyuko was because she said someone should do it, iirc, so I made it. Jay Sean was because he's just a damn awesome singer, plus I just wanted to have that username <3 I also changed back to Forever in November, and it's been that way since.
In January of 2010, I created That 626 goes all 126 on your 36, yo because there were other accounts with 36 in their usernames. Then finally, I created Stay away from that Jess, Zet! because it was based on timing, and a blog entry.
Aaaand that's my username history so far!
...I've had too many usernames >_>; Also, this is off the top of my head, so I might've forgotten usernames/accounts too. :(