Was there a time when anyone took Mark Halperin seriously? I mean, there must have been, right? Perhaps someone with a memory longer than mine can recall a long-vanished era where mention of the man’s name did not inspire hearty guffaws or lip-curling disgust (or, for his unfortunate co-workers, sad and silent shaking of the head). So how did we get from there to here? Oh, right, things like this line from his ridiculous “Sarah Palin is TOTALLY the read deal” piece: “This week Johnston and Palin’s daughter Bristol reannounced their engagement after months of estrangement, removing — with apparent serendipity — a blemish from her wholesome narrative.” Yeah, that’s how it happened.