It's funny how everyone here that's suggesting to ban signature campaigns are all enrolled in them.
Because we all love money obviously. What else do you think we are posting here for? Chit chat?
I wonder what will happen when the business for the more industrialized posters dries up. World famine and mass exodus from the forum? Many people were posting here before the era of signatures begun and are still posting (some of them with sigs), why shouldn't they?
If you're doing something anyway and someone offers to pay you for that you'd be stupid not to agree. Campaigns won't be banned because people are free to pay for advertising and free to advertise. This forum is all about freedoms and choices, if you don't like sigs you can disable them, report spamming users, or leave the forum and move to reddit.