Is it interesting pixazza? is there a good review of pixazza working well with non-shopping images/sites?
Yes it is and you will surly happy to use it as normal CPC for USA traffic is around $0.30 which is top for image ads! It's best for those who have more and more pictures and it could give more money then Google's own Adsense Ads!
Does it work for wallpaper sites for instance? Are the images from wallpaper sites suited to product ads as it is shown on their site? Does it always show ads on any picture of does it choose which picture is suited for ads?
Well Pixazza works in two manner: 1. Either you can tag products with your all images, you'll get money for click and product purchase but take long time and no Google Ads will appear on your image. 2. Setup an account and forgot everything, Pixazza will serve ads on all your images though Google Adsense Ads, you get money for clicks!
if I already have 3 adunits of adsense can I use pixazza still? Won't that be 4th adsense unit. I have seen this on few websites and wonder if its against google terms?