Interesting idea, however how will this differ from creating a facebook like page which hides the content like people do already?!<p>I think there is also user experience to factor in here. When I visit a bands page, take blur for a hypothetical example, I've already decided I like the band. When offered something for free to like them I've already make a concious decision to support them.<p>For your idea to be successful it will need to be embedded into sites where people already have engagement.<p>As a stand alone page it just won't work, unless you want to allow it to be branded per page, but that carries too much overhead.<p>Go for contracts with EMI or Time Warner and get your 'like > reward' product on hundreds of sites