This is one of my top performers as far as conversions and ctr goes. However I find that the free content is so overused that galleries based on it end up being useless after a while.
Now I have been to the CFF site and seen that the pics are pretty much a waste of space ... so why not let all/most of the pics be usuable by webmasters ?
More content out there, more galleries listed .... more signups. Seems pretty simple to me.
Ok I will shut up now
