Need Help Choosing New Affiliates For My Sites! Amazon Not Performing No Conversions!

We have several websites using Google adsense mixed with Amazon affiliate programs, and over the past 4 months none of the sites have any sales through Amazon. Is there another affiliate program or drop shipping that would give me some kind of actual return on my investment? Here’s the sites I’m talking about. Would clickbank or commission junction work on these sites?
Car Smashers
http://www.carsmashers.com
Lego Smashers
http://www.legosmashers.com
Property Smashers
http://www.propertysmashers.com

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