While it was fun to spin off a project specifically geared at Silverlight and Dynamic Languages, all that work is avaliable in each release of IronRuby or IronPython, so for the latest-greatest Silverlight integrations download your language of choice.
So this site is no longer needed. If you have any questions on using IronRuby and IronPython in Silverlight, please post them on the language's mailing list:
Join the IronRuby Mailing List: http://rubyforge.org/mailman/listinfo/ironruby-core
Join the IronPython Mailing List:
This forum will not be moderated anymore, so please post at the above locations if you still have an open question.