No, just that distributing the current form of your app (requiring update after X months) to a few sites may generate potential customers and should also provi

No, just that distributing the current form of your app (requiring update after X months) to a few sites may generate potential customers and should also provide plenty of feedback from those users. I do find it useful to actually watch a novice user trying to use an app without my immediate assistance. You can learn a lot by doing so, some of it may be useful!