In reply to Bulls Crack:
Well MS is used even less! I see your point, but never in all my life have I met someone who considered themselves a HVD climber, they either a V.Diff climber or Severe climber. All of these grades essentially only exist because the guidebook writers have decided not to use a + or -. HVD- IS the same as VD+ because when + and - are used, the the scale should really be VD, VD+, S-, S. Otherwise its VD, HVD, MS, S. Same thing! With an online logbook like at UKC you just have a strange situation where people start grading for essentially the same thing under different names.