if a user's ignore count (number of times they've been ignored by, say, Full Member+) were displayed, it could be easier to identify spammers, or easier for people to ignore spammers without reading their posts, or there could be an option to ignore anybody who has been ignored by 100+ Hero/Legendary+ members.
This used to be a feature, but got removed for a reason I can't recall right now. Basically users glowed Orange/yellow depending on the amount of people they were ignored by.
I seemed to recall that the reason for removing the orange was the computing resources it took to compute the color. Basically it was some computed attribute of the user that had to be recalculated periodically.