Pinterest is very cool, once you get it. Think of it as a place to store website links that interest you. Create Boards to store Pins by category, and follow your friends boards.
Tip: Don’t specify an interest in anything when you sign-up, and if it gives you followers when it starts, click your name and un-follow them! You can find lots of people to follow on your own. Following just means viewing their boards!
And, Deselect / Ignore any Pinterest dialogs to post your additions to FaceBook. Trust me, no one want’s to know…
I have an account going on here: BusDriverJim.
Update: I’ve created a cool Pintrest link (next to Facebook & Twitter, see below…) that puts any of my blog posts onto your Pintrest account, using the first photo in the blog.