I wonder if they're going to be doing the same sneaky tracking via cookies and iframe that the Like Button does irrespective of whether you actually interact with it or not.
AddThis (acquired by ClearSpring) is doing this as well. It goes even further by injecting an invisible Flash object that's just there to set a Flash Cookie that 99.9% of users don't know how to delete.
The shadiness of all of this tracking should give us all pause before we plaster our websites with these widgets.
