I've joined Qassia. I like the idea of being able to build a search engine with your own content sort of like a personal wikepedia. It also helps for backlinks etc via your articles in the site or by comment backlinks with your keywords.
http://gmartfin.qassia.com/
Have a look. I think if any of you are into development this will help. Get enough content into it and you could own some keyword results.
I forgot to mention that you put YOUR adsense code into the system and when your content is pulled in a search it's your paid links on the results not theirs (unlike most content sites)
BTW I have no affiliation with them.
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