I wrote a trie based offensive language filter for a chat system used by the NHL's original streaming games broadcasts, way back in '99. It was written in C, an

I wrote a trie based offensive language filter for a chat system used by the NHL's original streaming games broadcasts, way back in '99. It was written in C, and used the PerfectHash program to produce the hash table used by the trie to contain a dictionary of every known curse word, slang variant, and common misspellings in about a dozen languages. About 5 years ago I was looking at some open source chat systems, and I saw my old offensive language filter's entire build system in that open source project, pretty much just as I left it so many years ago. Someone else's name was on it, but in the C comments there's my name in the source files.