P&B should have a feature that shows you what a poster is most known for. A bit like Homer's personal analysis thing when he's looking for a husband for Patty/Selma; you hover the mouse over a profile, and up comes a list of their 'famous' posts, preferences and ideas. Almost like a permanent record, when someone outs themselves as a bigot, a racist, or did something fucking hilarious, it is forever marked on their profile.