When one copy/pastes work, it usually considered good form to cite your source and make it clear where you copied it from. I don't think that adding your own casual tone and tailoring it slightly to the thread counts as fair use.
So, unless you really are
David Downs, you might want to edit your post citing your post as being his work.
Oh yeah, and welcome to EvC! I hope you'll stick around and make yourself at home