If someone writes to M**Fker or any other highly offensive words you even can not read are okay in Sajha but if someone write even incomplete " WT*" to San the man of Sajha, that "WT*" could be WTF or WTH will become highly offensive , s/he will be banned for life. Who , whom when where are determining factors.
May be similar rules are applied, which direction the word is coming from. I mean from black to black is okay and not from a mouth of a white ass to a black will be very very offensive. You are brown and you do not know the pain of it, like some one felt the big pain of "WT*".