I thought this was kinda funny. A week ago, someone posted "Apparently <college name> has a financial aid department that is run by monkeys." on my college's Wikipedia article. Being a smaller college, I figured nobody would catch it. I went back today, and it had been edited out. As it turns out, Wikipedia has a Vandalism Bot of sorts that looks for and catches this kind of thing.
Reading through the page, I found the list of regexes the system uses to catch bad edits. There is a "good" list and a "bad" list, with commentary included. The commentary itself is kinda funny, in a "meant to be taken seriously" way. This could also be useful if you wanted to make changes that would not be caught.
http://en.wikipedia.org/wiki/User:DASHBot/Vandalism
Some of my favorites:
(?i)([\@a4] |h[i\!1][z\$s] |the ) w[\@a4]ng[zs\$]?
# a wang, his wang, the wang
becareful http://en.wikipedia.org/w/index.php?tit ... =354028912 (Man's name is Wang, lawl)
(?i)([\@a4]+s{2,}|[s\$]+h+[i\!1]+t+|c+r+[\@a4]+p|b+u+(tt+|m+)|d+[i\!1]+c*k+)[\s\-]?h+[o0]+w*l+e+[\$zs]+
# assholes, asshowles, buthowles, bumholllesss ect (Someone put a LOT of thought into this)
(?i)w+[i\!1]+e+r+d+[o0]*[\$sz]*
# I cant think of a time when this would be appropriate. (Just the comment itself is worth it)
This just goes to show you the power of a good regex.





