Peigi sent me a link to Locacious a great new iPhone app that lets you create walking tours. (Location + Loquacious = Locacious … Get it?) The walking tours are made up of locations with an image, text (links), and audio. Historians are using it to author urban history tours like “Jane Jacobs in Greenwich Village; The Flatiron District.” the app is free, but you apparently have to pay to upload your tour so that others can access it.
Note: the Locacious app seems to have been retired. See iOSnoops entry.