"F'rinstance, unless I specifically state that this posting (which is a fixed expression of my original ideas) is in the public domain and waive all claim to it, it's not and I don't. (Realistically, I'm not going to pursue action against people who reuse or create derivative works, etc.)"

Dave - nothing wrong with your example as a heuristic device, but, technically, I think anything posted on Mudcat not already copyrighted is copyright by Mudcat. It's an outgrowth of a wee pissing contest with the Harry Foxx "folks" a couple or so years ago.