I just finished watching Richard Baraniuk's 2006 talk at TED
(
http://www.ted.com/index.php/talks/richard_baraniuk_on_open_sour
ce_learning.html) and took a look at Connexions. I notice that
they use CC-by-2.0 (note it's not ShareAlike). So, that is a
potential source of content in the future if WMF migrates in the
end.
I'm only just starting to explore it, I may have more to share
later. If you're interested, take a look:
http://cnx.org/
-Mike
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Mike.lifeguard
mikelifeguard(a)fastmail.fm