Mingle and OpenSocial
Mingle uses the OpenSocial gadget stack to provide UI integrations. This provides a secure, standards-based platform for displaying one application's content in another application. Part of this infrastructure is that Mingle itself is an OpenSocial gadget rendering server. That is, it's possible to display almost any Open Social gadget in Mingle using Mingle's OpenSocial gadget macro. Generally speaking, a gadget is simply a piece of content from another application, such as a weather forecast map or a Go pipeline status indicator. If you use iGoogle and have customized your home page, you have worked with OpenSocial gadgets.
How do you extend Mingle?