As part of CBS’ “Social Sweep Week,” a reference to November’s status as a month when TV ratings are used to make future decisions about advertising and programming, the network is letting casts and producers of its shows take over their official Facebook and Twitter accounts. The Amazing Race did this on Sunday, and today it’s Survivor’s turn on its Facebook page and Twitter account . The great thing about this is hearing directly from people involved—in this case, with the oldest and still one of the most-popular reality TV shows. The odd thing about this is it basically acknowledges that following the show on Facebook or Twitter means that we’re usually getting filtered, controlled information from publicists. And of course, we can just follow, say, Jeff Probst if we want to hear from him directly, instead of watching a special video in which he continues to try to get the atrocious phrase “interactive living room” to stick even while dropping a mild spoiler about tonight’s episo...