wilderness - 12:51 am on Feb 3, 2012 (gmt 0)
I blocked them forever.
Jim was quite adamant about about taking the time to sort out the genuine translate users from the harvesters. Don't recall if he used a headers check or something else (sure there's hordes of old threads on this topics).
His logic being that if a visitor took the time to use translate that he deserved access for his/her effort.