I do think where the member posting is already registered or registered under 4 names etc its in the best interest of the community to let folks know of that to avoid abuse. I understand not everyone will be happy with the idea but to be honest most people dont post under different names so it affects very few users and in some cases I havent drawn the information into the public arena becasue the poster wasnt creating any drama, those doing so should be honest with the rest of us and post under their own names.
As for sharing being so "90's" perhaps your on another network to the rest of us ?