Forum Moderators: martinibuster
Cons: There is a click tradeoff. Some visitors who might leave your site by way of an Adsense ad might leave by way of an Amazon ad instead, and vice-versa. There may or may not be a SERP penalty for having (too many) Amazon ads. With both Adsense and Amazon, will your site look too commercial? You complicate your site management.
Having said all that, I do both programs, in order to diversify, also to have an alternative for pages that don't work well with Adsense. I can't (or won't) give hard figures about how one performs versus the other. It mainly depends on the niche you're in anyway.
Well for me the Amazon payout was too low to justify. I would get 30 clicks through to amazon, sell 1 $5.00 book and make .28... that is less that 1 cent per click! I would much rather a .20+ cent click on adsense
But that sort of assumes a one-to-one ratio of Amazon to Adsense clicks.
Until recently, my Amazon clicks have outnumbered my Adsense clicks by 5X to 10X. So even though I make much less per Amazon click (because of the low Amazon conversion rate, also the low sales price of the Amazon goods I advertise), overall my Amazon revenues have tended to equal my Adsense revenues.
Lately, I'm in an Amazon low-conversion-rate summer slump, and my Adsense CTRs have recently spiked upward (thanks largely to horizontal AdLinks), so now my Adsense revenues outnumber my Amazon revenues by several multiples. But that Amazon 20-25% of total revenues is still worth pursuing.
Again, so much depends on your site niche and other factors.