Actually, traditionally it's below everything else. The whole "Reply over the previous message instead of under it" is a newer trend in e-mail, and most programs still tack the sig at the bottom - beneath all of the quoted text.
Ryan Rushton wrote:
Hi all,
Tried the new Signature feature and noticed that when you reply to an email it puts the sig at the bottom below all the messages, should it not be at the top, where one(I) would create the reply? Or an option to have it appear on the top or bottom of the email.