Momento
Momento is an iPhone journal writing app. It allows you to make entries using text or photos and allows you to tag them with people from your address book, and locations from the GPS as well as category tags. In addition to what you capture on the phone itself, the app can automatically include events from web services, including twitter, facebook, flickr, and others. Any web service that provides an RSS or ATOM feed can be included. The app also has export and backup features.