In addition to the 7 boards I've already populated on my just-launched Pinterest page, I've viewed hundreds by others who have posted on a variety of topics - my personal favorite, of course, is photography.
Pinterest is one of those online pastimes that you can enjoy without obligation. When you want fresh ideas for just about any project, browse and see what others are sharing.
There's also a decent iPhone app that's easy to use. Unfortunately, nothing really compelling for the iPad yet.
As for my page, I'm going to focus on photography tips and "how to." That's what I find interesting.
You can find more photo tips and "photography how tos" on my Pinterest page.