When Loopt launched in 2006 it was ahead of a curve that is just starting to be recognized: Location. Now, with services like Foursquare, Gowalla, Brightkite, and even Twitter fueling the location-based services frenzy, Loopt realized that it needed to shift its strategy a bit. Enter Pulse, a new feature launching today.

Previously, Loopt was more of a passive service — you started it up on some device and it kept track of where you were. Other users could see where you were if they opened the app too, but generally it wasn’t about pinging your friends to let them know where you are and what you were doing. But Pulse makes Loopt much more of an active service. It recommends hot places, hot events, and lets you know what your friends are up to.

This new feature is already live on Loopt’s website, but as we alluded to back in May, this will also be a part of the Loopt 2.0 iPhone app, which should be released shortly. But things have even changed since then. As you can see in the screenshots, a key feature of this new Loopt is the idea of the “Check In.” Obviously