(yes i know this is old)
Ok, first of all, i dont see this as a useless thread, which makes me question just how "useless" the thread creators other threads really are.
This brings me to my point. Imo it's pretty hard to post a useless thread. but then ones definition of a useless thread differs i'm sure. Imo as long as a thread isnt asking a question that has been asked before, then it's a valid thread. And ANY thread that is contributing something, rather than asking a question, no matter how much you may not care about the content it's still not a useless post. It was important enough for a thread to the person who created it, and i'm sure a few others.
I think this "thread thread" idea is actualy a good one, and it gets users talking to mods about whats appropriate instead of viewing the mods as the OCD police. But i also agree that it would probably be too much work for the mods.
The current system of Post-thread cleanup (no pun intended) works just fine. But i dont think that having a thread deleted should be considered an infraction, unless it happens allot. and people need to know there not in trouble, there thread just didnt need to be here. I remember my first and last deleted thread. after that i was scared to make annother one for a month id say,

and it was a good thread too, just one that had already been done, and buried, and one that the search function (as usual) didnt turn up. if something like that was still on my "record" i'd probably be pretty purturbed about that, honestly.
So yeah, i suppose i'm not really asking the moderation staff to do anything, except maby treat the somewhat objective, "useless thread" transgression as less of an offence.