Is there a way to search the Content Network?

Sorry if this is a retarded question, but I know some money can be made on the Google content network... Is there a way to search around to see what others are doing to make money using the content network? Any info would be appreciated.

Thanks everyone.

Looking at target sites and noting ads that are running I guess? I never really cared what others were running but I guess that is one way to try and accomplish this. Your best bet and probably more time efficient approach would be to note ads that are running on sites and then creating placements on them, targetting them thru display networks or my favorite --> contacting the owners directly for flat rate fees.