We'll leak!?

I have thought a little about sharing the alpha (?) and the beta when it's finished, to a small group of people. If so, those will act like testers does, and has to sign an agreement before getting the download link. Each version will get a water stamp on it, so I hope it wouldn't get leaked if we decide to do this.

Those who finds the most errors, bugs, and such, will most likely get to test the next episode as well.

What do you think of this? Is this a fine (and unique) idea? The sign-up won't happen yet, though, and it most likely won't happen before four weeks before the game is about to be finished. The alpha will most likely be finished a months in advance, so why not get a chance of playing the early version of the game?

I was thinking about doing this public, as there are more interest among some of you, instead of having some who have never heard about the game to test it. Let us hear your opinions!