Ive limited my adlogger to one click a day per ip, and im getting around 5% CTR. Is that ideal? Or still somewhat high?
There's no such thing as a high CTR. As long as all clicks are valid on your site, the higher the CTR, the better.
if don`t think so....if you have Page CTR more then 10-20% (and less traffic) google will suspect you from click fraud....
It doesn't depend on only one factor which you have given that is niche {proxy}. CTR depends on lot of other factors too 1) Your ad blending 2) Relevancy of ads to your niche 3) Nature of visitor {regular visitors produce less CTR}