Digital marketing powerhouse Digitas/Modem Media announced today that my friend Cella Irvine would become their Chief Administrative Officer, reporting to their CEO. Cella is a long-time digital media vet, having led Microsoft’s Sidewalk operation in NYC for many years, up to it’s purchase by Ticketmaster/CitySearch. She went on to work for insurance giant Marsh, Inc. Anyway, she’s a brilliant and wonderful person, and should do well in her new role. BusinessWire news release on her new gig is here, and a Clickz.com news story is here.