If I sign up for membership after playing games for say, a few weeks, will my stats page reflect that or only the games I've played while owning a valid membership.

not a member...can't help

The site keeps track of your stats from your very first game onwards. As a non-member you just can't view them (the full stats anyway). So to answer your question: you'll see your stats for all games, even those you played before signing up for a membership.

Thanks efour...maby i'll callenge u soon. only so u can keep up with your losing stat... LoL.