I do have 4 worker accounts and they get regular updates in the "Last share at" column.
Last share at
2011-02-17 12:16:40    
2011-02-17 12:25:32
2011-02-17 11:46:57
2011-02-17 12:12:29    

they are 2 h behind either because of the time zone or slush's anti theft system:)