Dangit, Aaron beat me to the punch with the idea of creating a globally-modifiable page and then later creating an account to claim ownership. The demo I'm working on right now works the same way. I'm still one-uping him, though -- just a button on the front page, no text box.
Really? I'm doing the same thing, except it's just a button. When you click the button, a page comes up and says, "You have clicked the button. To click the button again, click the button" When you click the button again, it says, "You have clicked the button again. To click the button again, click the button again."
I'm trying to get it down to the absolute minimum of annoying configuration and deployment options. I don't think I'll ever match the masters though:
You have way too much text on your front page. It should just say, "Button clicked. Click again to click again." Better yet, why not just click it for them automatically? If they intended to do something else they'd have already gone to another page.