You can find a lot of these forums in internet, just go to google and do some search.
Then register as a member and post some thumbnails image with adf.ly converted, so people will have to click its to see the pictures. But before you do this, you can join an image hosting site that pay you like, sharedimages.org
By combine these two sites you will get double income, from adf.ly and the image host site.
(Please be patient when read this site, you will never regret your time)
