Hmm, I'd say I've been a fan since the release of WMYB. I got hooked once I was introduced to that song and haven't looked back ever since.
Haha, I know the feeling. I have a hard time choosing my avatars and signatures, too. I used to have Liam in both my avatar and signature but now I just have him in my avatar and have the rest of the group in my siggy.
You're the first person that has ever told me that Liam is their favorite! Liam is like the most underrated of the group, but he's seriously the sweetest and humblest one. :3 Niall would also be my second, too.
It's sooooo difficult to pick a favorite song! I seriously can't choose, lol. x) I guess maybe it would have to be "One Thing" from their older album and a combination between "I Would" and "They Don't Know About Us" from their TMH album. What about you?
Btw, there are a other people on PC who are fans. We're not the only ones, although the list isn't too big.
Also, make sure you click "View Conversation" on the VM thingy so that I get the VM on my profile. xD