Given the demand for good Ad Widgets or Widget Ads. and with things like WidgetBucks doing the round lately. the nooked Shopping Ad Widgets are the perfect fit as a alternative for those looking for some revenue generated from a widget.
The concept with nooked is to turn you into a Shopping Advertising Agent for them via Widgets. they take care of the rest. you simply choose a product you may like or that fits in with the theme of your blog and then generate a widget that can serve such product. you also get to choose what source you want use. that means from what online retailer the stuff will come from.
Only you have made your Nooked Ad Widget you can then proceed to put it in your blog once you have of course registered with them. but as a way to try out how the widget looks. nooked let you make a widget and ask for registration once you have finished to made your widget.
The Widget Editor is very straightforward and allows for a good integration in most blogs.
The only question would be if it works and they pay once you have generated some money out of it. but to answer that, i guess you will have to try it out.