keri hilson ft kanye west and ne-yo knock you down

[postlink]http://24stundenyoutube.blogspot.com/2009/09/keri-hilson-ft-kanye-west-and-ne-yo.html[/postlink]http://www.youtube.com/watch?v=HQ6sp3X_LVkendofvid
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keri hilson ft kanye west and ne-yo knock you down

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