Thank you @
Comity for putting it so succinctly ;) Had etc not been there, the rule in itself would make no sense as there are loads of harmless abbreviations out there not already listed, hence moderators should act when an abbreviation is used to offend rather than used to make a statement.
If you weren't told about any changes @
Chris, blame upper-management who yet again are doing the job of the Forum Manager (which I've always argued is an incredibly pointless position as they lack any real power and seem to be a sub-division of Community Manager).
Also, when are the "What are your" threads going to be moved back to their respective forums? The two members who argued for the change seemed to of disappeared when their arguments broke down and it was revealed that the change was to spite new members (a terrible idea) and the change came about because of made up rule or a poorly interpreted account of a rule that currently exists.