This client is about to get fired. He says he can't find a WP theme that he likes, despite looking at "hundreds". He's a local business in a particular niche (lets say landscaping). I'd like to be able to have him look at a bunch of WP sites that are actually being used in his particular niche, so that maybe he'll find one he likes in another city, we'll figure out which theme it is, get that theme and modify it according to what he wants. Does anyone know of a crafty way to specify a Google search of just WP sites in a particular niche?