My client had 3 blogs (which I had 3 categories for) on his radio website. When the bloggers logged in on the front end they created their article quick and easy and selected the appropriate categories voila!!! Very versatile and easy to manage permissions. Well documented.
I wanted to create a custom widget using the code EventBrite gave me with a countdown for an event I'm hosting. I just copied the html code they provided and copied into the Custom HTML Advanced module and selected where I wanted it. Easy as that!! Less than 2 minutes!!