You could use Active Content which would automatically change their posted information to what you've preselected.
i.e. U B B DEV (no spaces, gets converted to a web page, you could do similar but not perfect or ideal but at least something done automatically for you) To be really sure you would have to manually watch, see all posts as it's pretty hard to think up every site a user may post about and automate a change.
UBBDEV site example
