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Hi Robert, as this original question is quite old and not marked answered, would you mind opening a new one? This will give the question more exposure. I'll keep my eye out for it. Thanks! Christy

I agree Brandon. I think Raven Tools had something like this before thir Rank Tracker went belly up. Who knows, maybe SEOMoz will add it in the future, but considering the reduction of importance on tracking specific keywords, developing it may not be at the top of their "to do" list.