Twittori is a service build on top of Twitter to offer geotagging for single status messages i.e. you write Twitter messages connected to a place on earth.
Also you can follow places in a similar way than you are used to follow users on Twitter. This way you keep updated what is happening in your neighbourhood, your favorite bar or your next holiday destination.
RequirementsiPhone or iPod OS 3.0 or later
*Previously available here