Most of the forums I frequent have some sort of user signatures that appear below every reply that's posted by a user. As an example, in specific car forums people like to list the cars that they own (or owned) and what modifications they've done to them. Beer Advocate appears to be the only forum that I frequent that does not have that signature feature. I can see it being helpful for listing styles of beers a person likes, preference to flavors, breweries, etc. This way when discussing taste profiles, etc, it could be helpful. Maybe controlling the number and size of the characters that an individual is allowed to write into their signature would be a way of controlling the clutter that would come up if you didn't have those restrictions. This is just something that I've been wondering about recently, so I'm curious what others think.