I totally understand your desire to cover your ^#@! and attach copyright notices to your work. The world is indeed full of people who are looking to capitalize on anything and everything. I can appreciate the hard work you put into designing something, and you don't want others to take credit for it.
But, I like to think that the spirit behind the things that go on here at BYOAC is cooperation and sharing. I can't believe the great stuff people have made available for other mamers. Yeah, there is the possibility that it will be stolen and abused (see the artwork forum) but I believe that is the exception rather than the rule.
I'm ok with what you are doing, but if it goes to the next step I have problems with it. Take SuperCade, for example. Yeah, it's a cool design, but I think it should be removed from the hall of fame because of the statements the author makes. Copyrighting the plans is ok, but to talk about bringing in his lawyer... I wonder how many LEGAL roms he has purchased??
If you follow the artwork forum you can see that the ramifications of legal action against each other is only going to bring in the big companys who actually own the rights to all the games, artwork, etc. and make what we do much more difficult.
Please don't take this the wrong way, I support what you are doing here.
Oh yeah, I'm suing everybody for everything, and the settlement will be everything. I want it all!!!