Amateur Pages.. did someone mention them. I think that was them. Or was that Lensmen prog? hehe it is all slowly slipping away.
Anyhow, they may have used ctc at the beginning then changed.
You put their pics on your site and got paid per unique. They went on a long time. A bit into the 2000's. Prob died in 2001 as did a lot of stuff.
Actually I think Amateur Pages was Lensmens. This was another similiar program or such. Pixotna or something real rare like that. There were a few of those click thru pic progs that used ctc.