This is too much on the rumor side of things.
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http://www.google.com/#hl=en&sa=X&ei=WdxyTsvFG-LkiAKIkoz5DA&sqi=2&ved=0CBcQvwUoAQ&q=Palin+to+be+on+bob+and+mark+show+friday&spell=1&bav=on.2,or.r_gc.r_pw.&fp=7e03b5402b6aabd8&biw=960&bih=459