PLEASE READ I am not too sure about what I am saying but please do think about this and look into online copyright laws/content usage laws.
First of all, I know you are trying to advertise ArmorGames but you should seriously make sure you get the OK from Dan.
I don't know how your using the images but the armatars can easilly be considered stolen without permision from AG that you can use them. I am not too sure though. I seriously recomend you get this all OKed by AG Staff and Dan before you go any further.
If you have already done all of the above then I leave you with one thought, the only people who use Armor Wiki will be the people who already are members of ArmorGames. Basicly you will be advertising AG's own members about AG which is quite pointless.
I seriously doubt people will stumble over ArmorWiki before they stumble onto AG. If you want to advertise AG there are easier ways of doing it through socail sites like myspace, and other gaming sites. I don't think anybody will go to AG through AW, but instead the oposite.