As has been noted, when the tag was first created, it was agreed that after a certain time it would be removed from articles. This hasn't happened. As the tag appears on more and more pages, it becomes less useful, but one of the reasons people didn't want to remove it is because if that's done, then the articles are removed from the hidden category of ones that have information from Pottermore.
- Create a new tag "pottermoreold" that has only one function - places the article in the hidden category
- Remove the "pottermore" tag from any article whose Pottermore information is stale - i.e. only from Chamber chapter 4 or older and replace it with "pottermoreold" ProfessorTofty (talk) 23:32, September 18, 2012 (UTC)