I have noticed a lot of pixel pages have affiliate links, meaning affiliates find them usefull and are ready to pay for it. I don't know if it is a good idea or not but I set up a new pixel page dedicated to affiliate links. At least it is something new. And you can put a link there for just $0.50. (if you want the URL, PM me. I don't know if I can post it here) As an affiliate, do you think untargeted traffic converts? Did you already bought pixels? Do you have experience to share?
IMHO in 99% of the cases, these are links put up by owners of those pixel pages. They need to put in something so that the page doesn't look empty, and affiliate link is the most obvious choice. Link sales subforum would be a better place for that.