My own opinion is that if it could be seen who was posting tags it would increase the number of genuinely funny ones as most people telling a joke like to get recognition for doing so, and I suspect the abusive tags that demonstrate no humour or imagination would probably subside a little.
Given the relatively low number of tags allowed it seems a shame to waste half the allowance on threads simply to call someone a cunt which is pointless anyway.
Plus im inherently nosey like most folk and as we have some really good "tag comedians" in our ranks, and I would be interested to know who they are