Magic Forums

I am worried that an idea that I have which could be potentially beneficial to me may be stolen by someone whom I was discussing it with. I'm not seeing off hand a protection spell for this sort of problem. Is there any suggestions anyone has where I would be the only one who would benefit from my own idea otherwise if someone else has stolen my idea it would fail for them? I know often I hear write your own spells, but it helps me to have a starting point.