San Francisco - BitTorrent Co-Founder Ashwin Navin is stepping down as President to focus on a new tech incubator he is launching along with a few other high-profile tech entrepreneurs. According to a note Ashwin sent out yesterday, he has partnered with YouTube's Steve Chen, MySpace's Aber Whitcomb and HotOrNot's Jim Young and purchased a small building in the Mission District of San Francisco where they intend to build "a physical environment conducive to innovation, collaboration and company formation."

ION Media Networks, Inc. today announced that Helen C. Karas has been named Senior Vice President of Network Sales. In this position, which will be based in New York, Ms. Karas will play a role in helping the company achieve its revenue growth initiatives by working closely with ION Television’s advertising clients.

http://www.ionmedia.tv

Mobile arm of News Corporation, Jamster, today announced the appointment of Philippa Dworkin as vice president of global communications for Jamster. Dworkin will be responsible for corporate communications and the global press office. She will oversee the strategic positioning of Jamster's corporate and external message, the development of media relations programs and general communications operations worldwide.