Just asking. As I said.
As to your question: Its been a habit I picked up from the very first forum where I was active (a fora regarding a 'hobby' of mine). Everyone of us was doing so, since it was required. AIn most fora, members wont normally use their nicknames as their usernames. So, since we encouraged to address people in the fora by their real nicknames than just their usernames, we decided to put our nicknames at the end of our post.
But even though I decided to use my real nickname as a username in all forums I register in, posting my nickname at the end of my posts became second-nature to me, hence Im doing it still. :-/
No-one called on it though, that is, before you did.
As to the topic at hand: Time-travel. Yes, I think it is
possible.
Alel