thanks for the advice so far. I monitored 36 of the wikipedia update channels for an hour and came up with the following tallies:
"" (7053) MB (4274) M (1951) ! (1250) N (436) !N (406) B (366) !M (209) !MB (154) NB (95) NM (67) !NM (23) NMB (3) !B (2)
So it looks like the N, M and B can be combined? does anyone know what the ! means?
//Ed