Everyone has their own unique approaches do doing things.
Matt Levenhagen created the Campaign Blasts Method which he uses to find profitable markets with a unique approach. Every time blasters launch a new campaign they pay no more than 10 cents per click without regard for all the other variables involved - positioning etc.
I haven't actually used this method of Campaign Blasting, I first heard it from Steve - the same guy who created Ad Infiltration so I figured if he uses it you might want to know about it also.
Steve has had success with campaign blasting and uses the method to find and profit from niches using PPC. I bet he combines it with Ad Infiltration techniques to make a killing.