* YOUTUBE overhauls its mobile site, adding millions of videos.
* THE NTIA says converter boxes will be available February 18.
* THE WGA signs interim deals with Lionsgate and Marvel.
* NIELSEN launches VOD ratings service. Comcast signs up.
* LIBERTY MEDIA sues IAC over breakup conditions. IAC sues back.
* PLUS....Vudu, Microsoft and more.
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