4. Build your widgets site as a part of your problems with widgets site, building off your reputation and existing search results. Leverage the fact that you are regarded as someone who knows the problems with widgets into being a reason why someone should trust you when you recommend they purchase a particular widget. Interlink deep - when discussing the label fading on the ACME widget, discuss and link to the XYZ widget which doesn't have that problem. Turn reviews of widgets into a cross-over topic; covering problems, solutions and sales.