The point you make in your most recent post is excellent. When searching for information it is tough to find a thread that is 4+ pages long and have to go through it all to see where the nugget of gold is.
Thanks for all the replies. My question, in general, wasn't centered (or meant to be centered) on when threads get closed or for what reason. I understand there are rules and violating, in all likelihood, will cause a thread to get closed. I was just curious/observing the fact that guns/shooting *as a category* seems to have this practice more so than other hobbies/subjects.