I think my favorite username of mine would be a tie between my current one (Karen Foster) and my second one (Time After Time). I like "Karen Foster" because I got the name from a character on one of my favorite sitcoms (Step by Step) who happens to share my first name. It also sets me apart from the other 20-something usernames with the name Karen in it.

Another reason why I like this username is because I think people here will feel more comfortable talking to me because they'll be able to address me by my real first name, knowing that it's also my username.
I held the name Time After Time for the longest period while I was here (About four or five months out of my one year), so it's very dear to me. I like it because it sounds nice, and also because it's one of my favorite songs from the 80s.

But I didn't want to keep it because it got corny after a while. I still

it though.
My least favorite username was my first one (twice_da_sweetness). A little background on that name: It was my username on Xanga. I first got a Xanga in 2003 with the name sweetness_of_ch0colate, cuz I like the word sweetness and I love chocolate, so yeah. The next year, I couldn't get Internet at my house due to really weird reasons that I would rather not talk about, so that meant I couldn't blog as much. Therefore, I had to shut my Xanga down. Later that year though, I eventually got my Internet back and started a new Xanga under the name twice_da_sweetness...it was kinda saying "Oh, I'm back and better than ever *big smiley face* " It was my comeback name, basically.
Anyway, to sum it all up...my first username just didn't scream "ME!!" End of story. Sorry if I bored anyone.