Just sharing a thought.. For members who have been integrating GoldenCAN (4th click substitution) datafeed into your Amazon or other affiliate sites (like I do), there's DataFeedFile.com now : I've just signed up for their beta service myself but have not collated/display any of their links on my sites yet.
I was using Goldencan earlier but now I have switched to DataFeedFile.com. Works great and has good tools. Good Luck!
I've talked to Andrew the owner a couple of times. Sounds like it has more features that let you do shopping comparions and stuff which consumers probably love.