Twitter Queue is a module that provides users the ability to create a list of twitter status updates ("tweets") and post them to twitter immediately or to schedule them to be broadcast at a future
Export Menu to XML module allows users to access Drupal menus and theirs items provided in XML format. You could access menus from JavaScript, Flash, or any client-side plugin.
Imports entire flickr streams as nodes - can also save jpegs locally removing all dependence on Yahoo's Flickr service.
Relies on flickrrippr, and flickrapi.