  The search-volume corrected period distribution of contact binaries of the W
UMa type appears to reflect primarily the constant number ratio of ~1/500 to
the number of stars along the Main Sequence; there exist no evidence for
angular momentum evolution. The maximum in contact binary numbers is located at
shorter periods than estimated before, P ~ 0.27 d. The drop in numbers towards
the cut-off at P ~ 0.215 - 0.22 d still suffers from the small number
statistics while the cut-off itself remains unexplained. Only one out of seven
short-period ASAS variables with P<0.22 d have been retained in the sample
considered here within 8 < V < 13; this short-period field-sky record holder at
P=0.2178 d should be studied.
