Version 8261: Freaks:

As of this version we have expanded our definition of what is a "freak" to include also characters with below average Charisma score.

NPCs and especially merchants will give a much colder shoulder to those below average Charisma characters now NPC Merchants will be harder to gain appraise victory against with a below average Charisma Merchant Stall Owners will have harsher rules on below average Charisma characters