Industry Moves: Viadeo U.S., Smartclip, 4th Screen Advertising, BBWW

Viadeo: The Paris-based professional social network aims to hire 50 staff at a San Francisco office it’s opening as part of an attempt to garner U.S. business. Viadeo CEO Dan Serfaty (pictured) will divide his time between the cities. Twenty staff are moving from the French and Canadian offices.

Smartclip: The video advertising network is taking’s Natasha Ancill, who headed its relations with the MGOMD and OMD ad agencies, to be its own agency account director, charged with bringing more big ad clients aboard.

4th Screen Advertising: Another ad move – the mobile ad firm is taking Tim Scoffham from Virgin Media’s IDS digital sales house to be its account director.

BBC Worldwide: Richard Hornsby-Smith is the new Scandinavia head, replacing Elin Thomas, who is now EMEA format sales VP, C21 reports.