I have a question. Many well-known users, including those with a excelent reputation, create threads announcing their availability to rent out their signature space (or simply post it in their signature area).
Has this worked? Do people contact you to negotiate?
I am not directly concerned by this question but some of these members had rented their signature and/or their avatar, at least in the past since I no longer care about that.
There is other thing maybe not all of them do it intentionally but important, is to be accepted easily in signature campaigns and sometimes have a special deal with extra payments comparing to the other members with the same rank.