Sorry I haven't updated you in a while. Blyk has currently stopped giving out invites. This prevents anyone from joining at the moment. I do have assurances from a Blyk Rep that the invite service IS coming back. I will update you all when it is.
In the mean time I've opened up access to the Blyk community I've been working on. Consider this a public beta! Please sign up at http://blykcommunity.ning.com for all the news and updates
(P.S. There might be a new exploit in the works! Stay tuned)