I have had both sucess and failures with these campaigns. I would say if you are just promoting Party Poker and a bonus code you will not see as much success as if you live in Pekin Illinois and your promoting PekinPoker.com.

That would certainly draw my interest much more than a flier with a bonus code on it.

It's hit or miss though, be happy if you try it and get some sign up's nad if it fails then move onto another campaign.