How to Choose the Best Keywords for Your Cure Research

I know I sent you a message before about one of your sites to watch out because there was some competition coming. How do you pick the competitors you're going after? You just look at the big sites or do you go for the smaller sites as well? It's like, how small do you go in your faults when you do your cure research? Because it's quite interesting for people who like, are afraid of the upcoming competition.