I had to swing by our little local post office for something I had to sign for yesterday. There was a woman there exchanging hundreds of old stamps she had from home and the office clean ups. I never knew they did that, but apparently some do.
She said she was going to sell the forever stamps she was changing them for on e-bay, so that's another way some people make money from them. Taking stamps she wouldn't use and getting new ones.
I too wish the moderators would start getting rid of all the money grubbing affiliate, business, referral and whatever links people are posting all over the place in signatures and even worse, the posts themeslves. They are clearly a violation of the terms of service, but for whatever reason they have been letting them through.