The best way to get in touch is via email: carlo.pescio@gmail.com
I may not answer right away, but if I don't get back to you within a week or so, there is a good chance gmail decided to route your email to the spam folder (sorry :-).
Either try again or use an alternative method: I tend not to monitor twitter and facebook too closely, and I'm not an active linkedin user, but any of those is a decent backup strategy to reach me.