Okay, one last time: It's NOT diva, it's div, then grad, then curl...! I am not Whitney Houston!
Anyway, the only thing that a "poor man's patent" or "poor man's copyright" might get you is some extra evidence of an invention date. That's it.
Under patent law, you have NO rights or protections UNTIL a patent ISSUES. Patent pending is a legally meaningless statement -- whether or not a patent is pending doesn't affect anything, because you have NO rights to enforce until a patent issues. Period. A "poor man's patent" may be helpful to establish an earlier priority date, that's it. The USPTO assumes that the day you file for your patent is the day you invented it. You only need evidence of an earlier invention date if you need to prove you invented before some prior art was published or to defeat another's claim to the patent.
Finally, a patent only covers an invention, which requires both conception (the "idea") and reduction to practice (actually developing the invention far enough to be "practiced"). So an idea alone is insufficient for a patent.
Under copyright law, the idea is also not protected, only the expression of the idea. The old adage is, "boy meets girl is not protectable, but Romeo and Juliet is protectable." Copyright protection begins immediately when a creative work is "fixed in a tangible medium" -- you only need to prove a creation date if you want to sue someone for infringement. A registered copyright is useful because 1) it is presumed you are the owner if you have a registration (you don't have to prove it in court) and 2) it gives you more options for damages in a later infringement suit.