I notice in the document http://docs.orchardproject.net/Documentation/How-Orchard-works
You talk about Castle Dynamic Proxy: we use Castle for dynamic proxy generation.
I try to access to this link and obtain
Parse error: syntax error, unexpected $end in C:\websites\castle\newmainwebsite\wp-content\themes\castleproject\header.php on line 40
and if I try to access to http://www.castleproject.org/, nothing except <head><body>
So is it still used? or is it just a temporary error? :)