Every year, we get the same questions. Figured an FAQ is the solution to that problem.
That's cool! How did you do that? Mac Users:Suggested Applications probably has the application that did the cool thing. If it was a technique, it was probably learned at Mac Users:Useful Mac Links#Tips and Tricks
I've discovered that installing an application on a mac is really easy. You can usually just drag and drop the application to the applications folder. Now how do I uninstall? Is it the same?
To uninstall an Mac application, just throw away the app. It will leave behind preferences and the like so if you want to remove those, check ~/Library/Application\ Support/ or ~/Library/Preferences/ for remnants of the application. ~/Caches/ and ~/Logs are also good places to look. The other way is to look through Spotlight. If you want a one click solution, AppZapper or CleanApp
For non-GUI apps (DarwinPorts, Fink, etc) check that application's documentation. Pacifist is a great piece of software that allows you to look through the installer and figure out what it is installing where.