Hard on the heels of MyRagan.com launched by Ragan Communications earlier this month comes the Melcrum Communicators’ Network from London-based research and training firm Melcrum. Perhaps ‘launched’ isn’t the right word as Melcrum don’t plan any specific announcements, relying instead on word of mouth to drive up awareness of the new social network. I’ve been taking a look at the new offering during its beta development last week. Dan York, though, has written a first-looks review – far more relevant than…