Well, you're misusing the concept.  If I want to know whether it's better  
to use an acetylene torch or MIG welder to replace the muffler on my car,  
the fact is that there are lots of people reading all sorts of unrelated  
newsgroups (like the C# or .NET Framework newsgroups) who might actually  
know the answer to that question.  The best chance for me to get someone  
who knows the answer to the question is to post the question to every  
newsgroup I can find.

But that doesn't mean that's an acceptable use of the newsgroups.

The fact is, there are not "a TON of newsgroups" in which your question is  
relevant.  It's also not true that of the very small number of newsgroups  
where the question might be relevant, different people are reading those  
newsgroups.  So when you multipost, you just wind up making many of the  
same people read your question over and over.

Frankly, the question wasn't really on-topic in the C# newsgroup, but  
rather is more relevant here in the general-purpose Framework newsgroup.  
But in no case would a question that's on-topic in the C# newsgroup also  
be on-topic in the C++/CLI newsgroup or a VB.NET newsgroup.  If you think  
it is, that's a very good sign it's not on-topic in _any_ of those  
newsgroups and it would be much better for you to find the one newsgroup  
in which it is on-topic.

Inasmuch as the C# newsgroup winds up catching a lot of the Framework  
questions when posted in the context of a C# program, then if you're using  
C# it might make sense to include that newsgroup.  But even then, you  
should only include the post as a cross-post.  Posting as a multi-post, as  
you've done here, means that multiple people will be investing their time  
and energy trying to answer a question that may have already been answered  
elsewhere.

You're wasting people's time when you multi-post, and that's disrespectful.

Pete

The problem is that a lot of us *do* read all of those newsgroups, or a
great deal of them at least. Having to post "I already answered this in ng
X" in X - 1 newsgroups to save the rest some time and join up discussions
gets old fast. This is a cooperative effort, here -- your "putting your eggs
in all baskets" strategy effectively means that your time is more valuable
than the rest of us. Not a good way to gain friends & influence people.

Don't post X messages in X newsgroups (multiposting). If you must address
more than one newsgroup, post one message to X newsgroups simultaneously and
set Followup-To (crossposting). I've heard it said that you can't do this
with Google, I have no idea if it's true, but it's hardly a good excuse in
any case -- use a real newsreader and one of the hundreds of free servers
out there.

If you truly have no clue which newsgroup could be appropriate, then *ask*.
People will be more than happy to direct you. Posting your question in one
newsgroup that turns out to be inappropriate is usually no disaster either.
Spamming as many newsgroups as possible will just antagonize people.

The "suppose what the world would look like if everybody did this" guideline
may be useful, here. We'd effectively just have one big, unreadable
newsgroup for everything.