I ask primarily because it's come up, and I've gotten conflicting advice and requests.

Seeing the bad tag thread (and a lot of the other hideousness from "back when"), plus having a lot of time on my hand this week, I decided to attack the issue with a sense of purpose, and it was suggested that I could do so in batches of 4 or 5, which is how I've been going about it.  Do a batch, wait/do something else, and do another batch when next I notice the previous batch no longer being on the front page, as sorted by `active`.

Given that I've been told this approach is drowning out new posts when it bumps them all to the top of the `active` list, and I don't see anything here or in the FAQ about the etiquette on editing old posts, it seemed like a good idea to start a discussion about how this should be handled.    And since finding one piece of old garbage usually means you're about to find a bunch more (in my experience), it seems like something that applies more broadly than to just tag clean-up.

So... please advise and/or discuss.