We don’t often report on distribution deals startups make with big companies. But it’s significant that InterCall, the world’s largest conference call provider, is to give each of their 1 million customers an account with UK-based Huddle. The UK startup has built a suite of social collaboration applications which were good enough to make it the only non-US partner for LinkedIn when it added a bunch of OpenSocial apps recently (alongside the likes of Amazon and Google). Huddle is still running on a $4 million Series A round from 2007 from UK VC Eden Ventures, but revenues are coming in at the same time from premium features and enterprise accounts from the likes of UNICEF and even some US government departments.