[headShrinker]

"If you get an error saying that this app is from an unknown developer, that's because Apple doesn't trust you to make grown-up decisions yet about what applications you want to run. Just find Sleep app in your Applications folder, right click on it, and click Open."

Yes, Apple doesn't trust you, and with good reason. I think we have properly demonstrated the average public has no sense at all when when it comes to running software from unknown developers with the chance that it is potentially malicious and damaging.

[ianlevesque]

Developers should just sign their apps. Apple even gives signing keys away free of charge.

[steffan]

Do you mean if you already have a paid Mac / iOS developer account? That's the only way I've seen that provides the ability to sign an app.

[babuskov]

Agreed.

The setting to turn that off permanently is really only a couple of clicks away. "Grown-ups" know how to find it easily. Others are better off not being able to do it without understanding how it works.

[TazeTSchnitzel]

I don't think developers do either. Apple prompting you when you run an untrusted app for the first time is almost certainly a good thing (app replaced with a malicious one? you'll get an unexpected prompt), and it hurts nobody.

[kstenerud]

If someone has the power to replace an installed app on my machine, it's already game over.

[TazeTSchnitzel]

How so? On OS X that doesn't require admin rights.