|Two things I question here:|
Never ever EVER delete topic threads without notifying anybody. you've got to give at least 24 hour notice though I myself prefer 48 hours of notice.
I disagree. If a thread is duplicate, it needs to have a post put on it saying "this is a duplicate thread", with an suggestion that people post on the non-duplicate one. If a thread is clearly trolling, or utterly irrelevant and in the Revolution or the Spectacle, then it is reasonable to move to have it deleted or moved to the Conversation, with a message in-thread to that effect if necessary. If there is some complexity, then a discussion in-thread on what to do with the thread is often useful.
But a set time period? Why? The topic can always be reinstated if there's a problem.
Also, Tom, I love you dearly, but:
My first suggestion - NEVER DRAMATICALLY EDIT THE TEXT OF A POST EVEN A TROLLISH ONE. Fix the odd typo if you want, correct the HTML by all means, but if you have to do major revisions to make it appropriate, then delete the post instead. It's still in the system and can be reinstated later if you've made a mistake...
I would not "fix the odd typo", because by doing so I am imposing my idea of what *should* have been written over what somebody else *did* write. There are Barbeloids whose posts make little grammatical sense, or are badly spelled, but just because you *can* spell better, or believe yourself able to, you don't have the right to do so with their voice - that's how they have expressed themselves. We're not schoolteachers or subeditors.
If it is comprehensible, leave it. If it is incomprehensible, ask. If you really object to a misspelling, use your own voice to correct them.
Modding other people's posts without their permission should be a) because a link is broken, since one can be reasonably sure that they want the link to work or b) to resize an image, because it is deforming the frame or c) if HTML, for example an open bracket, is damaging the comprehensibility of the text, or possibly d) to put in spoiler space. If anyone has another idea of when editing *visible* text (i.e not HTML) is allowable, they are welcome to bowl it in, but this strikes me as a very bad idea.