On SourceForge, there exists a tracker for posting of examples.. (http://sourceforge.net/tracker/?group_id=105970&atid=654188)

Examples posted on the SourceForge site appear to be limited to 256K.  Also, there's not much opportunity there for feedback, corrections, and elaboration as are needed to ensure top quality documentation.

As good as SourceForge is, I guess this was part of the motivation for moving Wix to CodePlex.

So, it seems this is as good a place as any to keep the contributions coming...