Webmasters: What is your best Converted Products?

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Anyone who also built up your own site trying to sell something for some extra income? I have created a few sites related to different categories and promoting affiliate campaigns, any webmasters here can share their BEST selling products? for my case, i used to works well with promoting Games, but now it just simply dont work on me anymore! I am trying on some adults' products at the moment and some PPC/Popup ads... any more sharing here??