I think post records is not really important in determining signature's value because they're sunk in many threads and no one would see them. The future posts are more important.
Sorry, but ALL posts are equally important. What if I started a thread that got stickied? What if I posted in the first page of a stickie? What if I generally post in a board that is relevant to your niche? What if someone comes along and B U M Ps an old thread? What if someone searches for something and stumbles across something posted a year ago? What if someone actually wrote the manual? Forum Link Building tips (it's not just your signiture!) Buying sig links? Read this first!
Yes, you can sell signature if it is written in CP. You can not sell if you write like this: __________________ Some Signature is here
Could i ask direct for signature, like some one did 2000 posts and have an good reputation, so can i ask to him that,if you will post for my particular site then we can pay you this much amount
you surely can - myself, I´m now selling some bargain links in my signature for $15/year, which is dirty bargain price...