I am always looking at new iPhone apps, especially those that deal with location tracking. I just downloaded HipGeo to check it out. -- Douglas HipGeo: Location Sharing App Backed by CitySearch & eHarmony Execs Launches, Looks Great : HipGeo , a location based social network that I wrote about in February , started and invested in by a group of Yahoo veterans and advised by a team of corporate data rockstars, has launched its iPhone app and it's really impressive. I'm having some performance issues with it but the potential is clear and the user experience is strong. The app tracks your travels, then stitches together your photos, comments and pinned locations into an animated diary of each day. It lets you roll back time to see what you did on any day in the past and offers other sophisticated features in a beautifully designed interface with a well thought-out user experience. The company's launch was quiet, but if they can amplify their marketing I think HipGeo is...