I have to agree with Andavari razz, and I'll explain the various reasons why this "copy and paste" posting to different forums isn't considered good etiquette. And there isn't any need for a lounge discussion on the subject.
1)
It's a practice used widely by spammers and therefore usually raises suspicions when noticed.
2)
It's a practice used widely by deliberate "time wasters" who can have countless people on numerous forums giving of their spare time trying to help someone who actually has no interest in the answers.
3)
It's a practice which can actually waste the time of a lot of folk who have no idea the same questions have been raised on other forums. The moderators and regular members on here and other forums don't always just answer peoples questions and pleas for help off the top of their heads. They often spend quite some time researching a problem or question before trying to address it or answer it.
Even a seemingly simple question like "What download site do you use?" would have me checking out every site I recommended to see if they had changed before I gave an answer. Members of other forums could well be doing the same thing to simply come up with the answers you already have here. A complete waste of those members personal time.
A more thought out way to research a subject would be to have asked the question on here, and if you weren't convinced you had enough information, then to have moved to another forum with the same question but accompanied by an explanation that you had already asked this at Piriform, providing a link back to your question and the given answers here, and then let those other forum members decide as to whether they could provide you with something new.
4)
Most people who use this "copy and paste" practice waste a lot of peoples time by simply choosing what they think is the best solution on a particular forum, and never returning to the other forum or forums where genuine volunteers have spent literally hours trying to assist them. I've been there and don't ever want another tee shirt.
Or they return to each of the places they've asked the identical question and reply with a one line "problem solved" and never say how, or ever return again.
5)
We've had a case on here where a regular member was asking, ne begging for help by pm from numerous moderators for answers to exactly the same problem, without the individual mods being aware that they were all working on that same problem for him. This scenario was only discovered by chance and was an absolute waste of peoples freely given time, and an insult to the people giving of it.
Is that any different from asking the same question at the same time on different forums without those individual forums being aware that they could be putting in their freely given time to simply duplicate answers already received elsewhere? Absolutely no difference at all.
So basically, no, the issue doesn't have to be revisited or discussed in any way as copying and pasting identical questions to different forums at the same time is not a good practice for the reasons given above (and I may have even missed a couple).
There isn't any law or forum rule against it, but the individuals involved in the different scenarios outlined above have caused this trick to be placed firmly in the "frowned upon" category.
It's entirely your choice of course razz, but I wouldn't answer a question if I was aware that it had been duplicated on another forum or forums.
And please note, I'm not even vaguely suggesting that you are in any way trying to do the stuff I've just outlined above, I'm simply describing the wagon you could be climbing on if you think it's an OK thing to do.