looking for a traffic source but i forgot the name, 4 years ago i used a traffic source where people got paid to watch ads, i could set a minimum of 5 or 15 or 30 seconds etc (not sure if really 5 15 and 30 seconds), the longer i set the minimum time the more it cost me. depending on the setting its a 1 cent "per click" traffic source (or maybe cheaper cant really remember).
can you name me some traffic sources that work like this or similar?
i hope this post is not against the TOS,
thank you very very much!