I like this approach to constructing the PLEs, because the technology looks like biology, and that makes it much more palatable. And we are developing interesting new methods of collaborative marking and moderation using Google Documents - more on that later I suspect, when Stuart's written the manuscript! ;-) There's quite a frisson in watching your colleagues minds working as they deliberate whether a particular item is a Douglas or a Desmond, and the Google spreadsheet updates in real time in front of you as they waver.
At the same time, the students are doing an overlapping assessment by bookmarking items on delicious, and in this case, using our first year module codes to specify which parts of the degree course the items are relevant to. This is building up a repository of information for the entire cohort (and staff, if they care to use it):
The question is, what are we going to do with all this data?