Recently I changed Facebook Like buttons on several of my sites for AddThis counting buttons which include the Facebook count (or so I assume that is what the number in the box next to 'f like' is).
From a code point-of-view this is simpler and gives also counts and sharing buttons for other services. However, the counts were mostly reset to 0 or at least to a much lower number than before.
Why the discrepancy? What could the two things be counting differently?
