IMessage won't send only text message?

My 3G Is on, I have a good data plan, and my text messages send just fine, I have all service bars. Why won't my Imessages send? I have an iPhone 4S

Http://www.zdnet.com/imessage-down-for-some-users-7000007556/

iMessage and FaceTime seem to be down. I'm having the same issues. We just have to wait until service is restored. It the meantime just turn of iMessage.

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