The distance of 3600 ly makes it the closest known microlensing planet! The record holder, OGLE-05-390L is whopping 21000 light years (6500 pc) away. That's almost one quarter of the diameter of Milky Way. Since gravitational lensing method may be the one which finds the first exo-Earths, it is likely that they lie at comparable distances. Which is truly ironic, since if some of our neighboring stars have such planets, we won't find them for a long time.

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Science is a way of trying not to fool yourself. The first principle is that you must not fool yourself, and you are the easiest person to fool.
-- Richard Feynman