We may be witnessing the creation of a rare giant among second screen apps. Online guide producer i.TV has just acquired GetGlue, giving it control of one of the largest TV check-in services. The two aren't revealing the terms of the deal, but GetGlue will keep running; i.TV plans to integrate its services over time. Just what that means isn't clear at this stage, although the expanded company will say more early next year. Suffice it to say that the deal is promising. When i.TV and GetGlue have previously teamed up with big names like Nintendo and Sony, we'd expect the combined entity to have an even greater impact on our TV viewing habits.