Hello,
I published an affiliate marketing guide on affLIFT earlier today showing one of the strategies I use to find winning (profitable) campaigns using Monetizer and PropellerAds.
This strategy does not require much effort and over time you can build up a nice little base of profitable campaigns that can start bringing in a steady amount of revenue.
I use Monetizer in this strategy because they're transparent with their data and they also have a great payment schedule so you're less likely to run into cash flow issues.
PropellerAds provides great pop traffic that converts well and they have a ton of inventory.