I've been working on interoperability among three areas:  the library/museum, educational technology, and general web technologies, specifically those that involve writing for the web.  The UC Berkeley Library (and many other university libraries) have started to mark up their digital content in the MOA2 format (and soon in the METS format).  I converted one example digital object, the diary of Yoshiko Uchida , from MOA2 to OPML, which I then rendered as a Manila directory. 

Since the Uchida diary is already converted to OPML, it can be read into an instant outline.  For fun, one can even add the Uchida diary to your Radio buddy list by clicking on:  Add the Yoshiko Uchida Diary to your Radio buddy list.

(I've been playing with this subscription link because subscribing to an instant outline is akin to the scenario that we have in B-OLE:  that of users dropping objects into their digital box of learning materials.  In this case, the Uchida diary is the learning object -- and one's Radio buddy list is the "box".)