{we are told that "tagging" is an offense against the TOS (but not mentioned anywhere in the TOS, BTW),} Haven't you checked today's version of the TOS? It changes so often. One person will get a "talking to" about an issue, but another person won't. One mod will say something is "bad", but another will let it slide. One merchant will get "in trouble" for "advertising", but a top-selling merchant will not. But, again, this is a private site, so any cries of "censorship" won't work. The owners can allow what they want (or delete what they don't like) at their own discretion.