My point is does a spammer many years ago will forever be spammer and won't be able to improve his posting quallity? I maybe was a spammer before but I believe my postings or the way I discuss to this forum have improved.
There are unrepentant spammers, these set of spammers do not improve because they do not even acknowledge the fact that they spam. A spammer will only repent and improve only if he/she is remorseful and willing to improve.
But your own case is different because you are conscious and must have improved. There's only one case scenario that The septical chemist is always against; in his words "He doesn't believe that anyone who could make good use of the English grammar will degenerate overtime time and become a spammer, but the reverse could be the case."