The iPhone App Store has just gone live and one of the apps getting early attention is Loopt, a location aware mobile social network startup we profiled in June. Loopt enables users to broadcast their status
to a broad set of services and find interesting locations and reviews nearby. Their latest release for the
iPhone integrates microblogging and reviews from Yelp into its interface.
According to founder Sam Altman, Loopt is using the
iPhone's rich media platform to pilot new features and services before they
filter their way into other mobile phones.

Loopt status updates can now be published to Facebook and
Twitter accounts the user has linked to; other services like FriendFeed can also
be updated via an RSS feed of Loopt statuses that the service exports. For
iPhone users at least, Loopt updates will show up as tweets on Twitter, as
status message updates on Facebook, and as new statuses on FriendFeed.

In addition, Loopt aggregates local content to provide a map
view of great places and star ratings. As Loopt adds more content
partners besides Yelp, the var