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I read just recently on tehBing blog, that Bing will treat a 302 that has been in place for a long time as a 301, and visa versa, if a 301 keeps changing they will trat it as a 302 But I have no idea if Google does anything like this. “An ignorant person is one who doesn't know what you have just found out.” Will Rogers http://www.bing.com/community/site_blogs/b/webmaster/archive/2011/10/06/managing-redirects-301s-302s-and-canonicals.aspx