This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
If you have to ask, it probably isn't needed in your application. Seriously, warnings aren't looked at in most business applications. The first example that comes to mind is an application that troubleshoots database connections.