reconsidering CSS vendor prefixes

Leaders in the community seem to be taking another look at CSS vendor 
prefixes.

http://www.quirksmode.org/blog/archives/2010/03/css_vendor_pref.html

http://lists.w3.org/Archives/Public/www-style/2010Mar/0026.html
(I bookmarked that one under http://delicious.com/connolly/web+architecture;
meant to send it here by didn't manage until now. I haven't fully thought
it thru yet, but now seems as good a time as any...)

This seems relevant to ISSUE-41
LanguageVersioning-41
What are good practices for designing extensible languages and for 
handling versioning?

-- 
Dan, using a mailer he hasn't fully configured yet