A lot of progress has been made in the wider web2.0 since I wrote this post back in January. We've been thinking hard about ways to combine the goodness of wide-open folksonomies with group-wise resource collection and annotation. Watch this blog in late 2005 for news!
This post has been made a tad obsolete by a change in our approach. We're now much more interested in pushing distributed, service-oriented approaches: "data outside" rather than "it's all in my portal".
We have some definite ideas and plans, but no time right now to write them up... please watch my elearning2.0 blog in late 2005 and early 2006 for news about the work we plan to do.