Adbrite High Paying Keywords/Categories

Hi DPers,
I’m using adbrite ads in one of my sites. Site is categorized under Games/Arcade Games coz I’m planning to use this site to promote a Java 2D Game written by me. I’m not selling this game so only revenue is from adbrite ads. However no ad is displaying in my site. Is it because adbrite has no ads under this category? or what are the highest paying ad categories?
Thanks in advance.

Original post by nvidura