CPM Rate for viral/image/multimedia site

What would be a cpm rate for a site you would find clicking thru sites like 2leep.com
Im interested in the blogs 2leep links towards, not 2leep. I realize that if you brand yourself you may be able to acquire a more robust array of advertisers, but im more interested in the generic sites that just focus on traffic.

For the most part these sites generate a few hundred thousands unique visitors per month.

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