currently, a relatively big EU-funded research project attempts to accomplish something for philosophy corpora that sounds close to what you have in mind: the Discovery project (http://www.discovery-project.eu/
Unfortunately, I'm not sure where they stand right now, neither do I know anything about the technical details of their implementation. I'm not sure if they strictly use TEI markup proper, or if the annotation layers are stand-offish, but with WAB Bergen as a member institution, I would expect them to do things in a spirit at least close to the TEI.
The Collected Works of Ferdinand Ebner
(The Brenner Archives/Austrian Science Fund #P18428)[log in to unmask]
2008/8/17 Eric Lease Morgan <[log in to unmask]>
How feasible and/or practical do you think "crowd sourcing" TEI files would be?
Suppose many classic texts were marked-up in TEI. Suppose there were stylesheets that allowed you to turn on or turn off other people's commentary/annotations or allowed you to turn on or turn off particular people's commentary/annotation. Wouldn't that be interesting?
Moreover, what if some sort of tool, widget, or system were created that allowed anybody to add commentary to texts in the form of TEI mark-up. Do you think this would be feasible? Useful?
Eric Lease Morgan
University of Notre Dame