PGXN vs MetaCPAN
David E. Wheeler has done some great work with PGXN. It's an excellent example of how you can build something CPAN-like without being weighed down with design decisions from long ago. There's JSON all over the place and there are mashups just waiting to happen.
In his latest post, he has challenged MetaCPAN to duplicate some of the shiny, new PGXN functionality. Turns out we can do shiny things too. This solution uses a combination of our current (older) API and our (newer) beta front end.