If you have a video or movie site then there is a great way to earn bucks by locking the pages with premium content and get the visitor to fill in a spam free survey to gain access to the content
you get one dollar per survey filled in
I am having success with this program and feel confident to recommend it. They dont accept everyone they are an ethical company so will check yor site before they accept you
they dont spam or hassle your visitors nor does the visitor have ot pay anything to access your site just fill in a short survey.
http://www.cpalead.com/apply.php?ref=37304