Greta Van Susteren out at MSNBC…Ari Melber In at 6pm.

Well that was insanely fast…like itchy trigger finger insanely fast. I’m not sure that wasn’t a premature move on some level. Short of cratering outright, which Van Susteren’s show didn’t do, it’s hard to kill off a show after only six months.

But, what’s done is done. TVNewser’s Chris Ariens writes that Ari Melber will be taking over the 6pm slot.