I use Rightedge (a third party program). I'm investigating using Multicharts as well.
Quite simply, I find it insane to believe that Rightedge or Multicharts would wager all potential future sales of their product against whatever results my algorithms would provide them by stealing it. They are as trustworthy products as you'll find anywhere.
They will not steal but COPY without you noticing it. So they take no risk. That's the advantage of electronic stealing, it can be done without somebody even noticing it. Because the don't actually steal, they COPY. You will never miss anything.
And if they ever find something, how will you know they have or not? They will not post on internet that they copied interesting code.
Paranoia is not good, but being naive isn't either. Healthy paranoia is the best attitude.
