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Have we reached the point of a Big Brother state online? It sure seems that way with the recent revelation that the FBI and Department of Justice routinely read private emails, Facebook messages and Twitter direct messages without a warrant — flouting the Fourth Amendment. We’ll discuss that and more on this week’s episode of the Mediatwits, with special guest Henry Jenkins, professor at USC and co-author of “Spreadable Media,” looking at how media spreads and why. We’ll ask him why he hates the term “viral” media, and talk about his favorite fan-created media. There’s also been a brouhaha about “open interviews,” with Gittip founder Chad Whitacre saying he will only do interviews streamed publicly online — which led to TechCrunch refusing to participate. Should journalists do interviews in public? Our roundtable includes host Mark Glaser, Seattle Times’ Monica Guzman, Guardian’s Ana Marie Cox and USC’s Andrew Lih.