HLN was actually useful back when it ran, you know, headline news every 30 minutes. It wasn't glamorous, but it was nice to be able to get a basic read of the news without the emphasis on personalities, commentary, and all that other crap. So as far as I'm concerned they jumped the shark a long, long time ago.
So no, the people they're claiming to be targeting here are the people who don't want/need to sit down and watch the news on TV. And pandering to them with some hipster anchor actually saying the words, "OMG, did you peep what Beyonce just tweeted?" is probably going to be as bad as I imagine. Just think of G4TV, where the personalities could spend a whole 30-minute show talking to each other while staring at their laptops. Only with the cred that only CNN can bring.