Thanks again, kaveh
Yeah, actually I think I'm happy with working on problems in an economics and game theoretical setting, whether or not they are related to any actual applications. As you pointed out, I'll try write my interests broadly, especially for places with fewer faculty working on econ.
Just out of curiosity, do you know the number of people that some top universities accept for their PhD programs, for theory? Since you're doing a PhD yourself, I just thought you might be aware of that for some places.