eTeaching gets visible: quality will improve; Career will depend on it..

to slide 4a

Search eLearning material worldwide [the more semantic markup, the better]
Comment and Improve other's work
Download, Adapt, and Integrate, work with it locally, improve
all types of refereeing possible; long-term archiving; upload to University Repository to attract students and staff
Semantic Content Markup Languages can find and understand math/physics/chemistry of as many documents that are accessible.

Thus the strength of semantic markup depends on the number of documents searchable, and thus on Open Access.