I had an interesting experience a couple of days ago. I tried to use the word anecdo-tal (without the dash.)
The word came out anec***al.
Like most message boards, this one apparently has a filter to censor unacceptable words, usually the common "four letter words."
I have yet to figure out what unacceptable word includes the three letters d, o and t in succession.
In the meantime I probably won't be using anec***al much.