Meme:
I know this doesn't help you with the plugin but I just read something on the Amazon plugins that state the collections info is saved in the Documents folder on the Touch. When looking in the Documents folder I noticed each book in a collection now has a sub-directory that is the name of the collection and then another sub-directory with the name of the book and an
.sdr extension. For example:
\Documents\Fantasy - Series\Against All Things Ending - Last Chronicles of Thomas Covenant, The - 03 -.sdr Now if only you can take your genius and create a Touch Collections plugin....