Is there any possibility to make Authors Ranklist also viewable per country? I mean every country to has a separate ranklist for just its coders. Shouldn't be more than few lines of code and one WHERE clause more in the database query :)

For what purpose? Country shouldn't be a parameter by which you can sort people. Are you nationalist?

I mean only add an option to show only people from a certain country. I would like to see how are the other people from my country doing.