Greenstone is fantastic. And I want to thank you for adapting greenstone
to OAI and METS. And Greenstone3 looks fantastic. Greenstone has some
really fantastic parts to it -- which when combined with some other tools
would be really powerful. I am interested in combining some features from
Greenstone and DSpace, also creating internal links from documents to the
refered documents (kind of like how citeseer works), name authority
control, a thesaurus, and a few other tools to work in and between
collections. I know Greenstone was not intended for these purposes, but
part of the academic world is clamoring for institutional repositories.

A few questions:
I'm kind of looking for advice on where to begin with any and all of
these.

Access -- How hard would it be to index an item in Greenstone, yet have
DSpace control access to the full document? (DSpace has a strong emphasis
on permission to access).

Search support -- I'm still very interested in the berry-picking work from
early Greenstone. And supporting searchers even more.

Moving beyond Dublin Core -- Dublin Core is fantastic for homogenizing
collections, and necessary for OAI, but for local use, Greenstone is
flexible enough to create MARC-like records or even one's own metadata.
All these are important. DSpace's provenence leaves a lot to be desired.

Adding Annotation -- allowing users to add annotations to the documents in
a Greenstone collection. This will probably be the simplest.

Mixing with citeseer -- adding recommender type bits via citation.

-Karen Medina