Industry Moves: CollegeHumor; ChaCha; Chomp; Ai

CollegeHumor Media: Paul Greenberg recently joined as CEO of the company that operates,, and He previously served a brief stint as president of digital at Time’s lifestyle group. Prior to that, he was EVP and GM of TV Guide Online.

ChaCha: Greg Siefert is now CTO, responsible for the company’s engineering and technology operations. He previously founded and was president of Springhead, a leadership and tech consulting firm. Earlier, he was VP of solutions formation at Ambassador Solutions.

Chomp: Actor and new media investor Ashton Kutcher is joining the app discovery startup Chomp as an advisor. Kevin Rose, the creator of Digg, is Chomp’s other advisor, and the two will help the startup build relationships, as well as contribute to the product and marketing strategies. Chomp is available as an app on the Apple (NSDQ: AAPL) store as well as a web service. [via Mashable]

Alexander Interactive: E-commerce and web design firm Ai has appointed Meghan Widman to design director, where she’ll lead the visual design group. She comes from LBi and earlier she worked with Digitas.

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