In this Meta question I went ahead and applied the new Meta site-cleanup. Is this a good Meta tag to have?
It seems like it would be a useful category to be able to search over. In particular, I'm aware of TRE 1 and TRE 2 (et seq.) that it would fit onto; perhaps there are others?
Or, will it be too general, or too meta-Meta, or too infrequently used, or ...?