As we all know, parrot has been in development for 7 years now. That's a lot of time and many things have changed since then. From my point of view one of the biggest strengths of Parrot is that it's a target for many (and why not all?) dynamic languages and as I know there's no other VM like it. Well... since now.
Check this article: http://blogs.zdnet.com/microsoft/?p=404 Microsoft announces a dynamic layer for CLR, so they will be able to support dynamic languages on their VM. And JVM 1.6 already has this, plus it's opensource and has support for the mainstream platforms. So, is one of parrot's biggest strengths gone? Are we too late? Why would the developers use Parrot instead of JVM/CLR/Mono?