Forgive me if this is an ignorant view; but isn't plagerism (sp) only related to those wanting to profit in some way from the copywrited words of others? I agree that it is iriitating when it is obviously not original thoughts - but is it as serious as that on a forum? Don't get me wrong - I think credit should be given where deserved - but is this a 'mountains out or molehill' argument?
Plagiarism is simply taking any writing of someone else and presenting is as your own. It doesn't have to be copyrighted. And yes ... it may be making a mountain out of a molehill when applying it to message forums, but it is irritating nonetheless!