Pinterest, the app, is essentially just a smaller version of the site you'd browse from your computer. It's far and away the best way to share inspirations for projects, recipes, and other crafty things.
This app offers a virtual version of the classic pinboarding/dream boarding way of noting things that inspire you or projects you'd like to try. If you've never used Pinterest before, it's relatively easy. You can follow other blogs and "pin" their ideas to your wall -- which you can organize into multiple sections such as food, clothing, and more. You can even post your own "pins" to share a favorite recipe or cool project idea. All of the posting and sharing features are incredibly easy to access from the app. It presents your feed just like you'd see it on your Web board, and adding something to your pinboard requires just a few taps. You can even send the pin directly to someone you know on the site. You can log in through Facebook and Twitter and share contacts from there, but there isn't a way to import your phone's contacts to find new people to follow.
If you're already a member and have a smartphone or tablet, there's no reason not to download this app. It gives you everything you'd expect in a small, sleek package that is easy -- from install to use. Just remember that you'll be more likely to waste a day on Pinterest when you can browse it from your mobile gadget.