Isn't the checkdate just the same as when this business was added?  A query could be use to determine this date based on when the node was created.  Adding a check date just to match the date a node was added is dumb.

By adding a check date from so long ago, are you verifying that you checked it in 2013 and can testify that it existed then?  What if it was added from fantasy mapping or via import but never actually checked?  Are you confirming that you checked it in 2013?