Long story short, an IRC Channel is a perfect way for instant communication.
I used one frequently when I developed GingerDX for the Xperia X8, it' much better than such a cluttered thread, the OpenSEMC thread.
I invite everyone interested in the Xperia S to visit.
Just use this link to the webchat: http://webchat.freenode.net/?channels=nozomi
Or use an IRC Client and log in to #nozomi on freenode.net