I agree with Jocelyn. You “go where the clients are,” and you market to them in the best way “to reach your target audience.” I think that too often we as trainers think that we need to do something extraordinary to reach an audience when in fact, we simply may not be marketing to the right audience in the first place.
A great book that I would highly recommend is Permission Marketing! Some great lessons on marketing can be found there.
I hope that this helps.