The following perfectly innocuous words or phrases are blocked by the english chat filter as of this writing. In at least one case, the implication of adding a chat filter makes the parable of a certain dutch boy sound WAY dirtier than it is.
- Brochure
- Elaphure (an extinct species of deer; same 4-letter problem as above. However, bisulphuret is ok: the problem only seems to occur when **** is at the start or end of a word)
- Magna cum laude
- Dike (which is a mechanism for water control; the perjorative has a different spelling as far as I know)
- Homo sapiens
- *Piss*ant (rude, but arguably not bannable)
The wiki also lists several words that are supposedly filtered, but aren't. (pine, tabernacle, sacrament, etc) Fortunately, we are able to say grape now.
Its worse in spanish. Small differences between spain and L America leads to awkwardness and a poor choice of bad words.