It's a sad day for fans of the long running vampire show True Blood. This next season, the show's seventh one, will be it's final one according to the network. The show has only just gotten a 7th season renewal it seems HBO wanted to ensure to leave no questions about a possible 8th. The show really opened doors for HBO, finding a younger crowd for it's usual set of dramas. However with newer shows like Game of Thrones knocking around it's no surprise HBO might want to put their money into existing projects that are doing better in the ratings.
Meanwhile one of those newer and growing shows got itself new life from HBO. The Newsroom, the Aaron Sorkin show, is prepared to end its second season in the coming weeks with the knowledge that they'll be returning for a third. This isn't much of a surprise since the show has thoroughly pleased the network and garnered plenty of attention including a few Emmy nominations. It may not be causing huge waves with critics like you'd assume a Sorkin show too, it has found itself a solid audience and seemingly gets better as it goes on.
Finding a balance with these kind of shows is a delicate one. Networks like AMC can't seem to find out how to figure out which shows should get a budget and which shouldn't. HBO probably does much better when it comes to a budget to spread around but you can't let shows go on forever. Keeping a diverse, and young, audience interested for a committed period of time is difficult.