Uninstall a Google Chrome extension on a Mac
Obviously, Google Chrome extensions are cool (like plugins for Firefox), as they enable you to get your browser to do new things. But having installed the bit.ly one, it turned out to be a bit of a pain.
Instructions on the internet for how to remove / delete / uninstall extensions for Google's Chrome (I'm running version 5.0.307.11 beta) are sadly lacking - or way overcomplicated. It turned out to be easy.
Go to the Window menu at the top and then click Extensions. There you'll see a list of extensions you're running - and the option to disable or uninstall them.

How to delete, remove or uninstall extensions for Google Chrome on a Mac OS X
That's a lot easier than hunting round for preference files in your library as most advice tells you to do. Shame Google didn't make this clear anywhere ...
... or hold down ctrl (i.e. right click), and then select Uninstall ... no?
You may think it's easy ... but try searching the internet for how to do it!
Ah, but one of my keeps crashing and is unloaded, and therefore doesn't show in the extensions manager! How do I find that ?
Have you tried the preference file method?
Go to Settings -> Tools -> Extension and you can uninstall the extension you want.