Content sites are places where you can upload writing pictures and other content. Then earnings from advertising are divided between the author and the host site.
Since the Panda update to Google content sites have not been receiving as much search engine traffic before, and have become less profitable. In 205 many sites closed including Squidoo.
Hubpages remains one of the few sites that is sill somewhat profitable. Performance varies based on subject, but payments of $2-$5 per 1000 visitors would be fairly typical.
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