Hoping to keep track of places to check out on your trip? Placeboard wants to make it easier for you to keep them in a single app. The iPhone app is a simple bookmarking app for locations. You just need to type in a place and add it to Placeboard. To help you organize, you can use tags. The app lets you search by city or even just look at what's around you at the moment. You can also send out lists to friends over SMS or email.