If you have a barn in your garrison, chances are you've run into this problem: trap stealing. As you go out to trap beasts, especially elites for Savage Blood, you've probably run into the nuisance of other players trying to trap the creatures you're trying to trap. This makes collecting Savage Blood a headache that often has to be done very early in the morning or very late in the evening, to avoid other players and the problems that can come with them.
However, Blizzard is currently working on two changes that will make trapping a lot less frustrating. First, they plan on increasing the spawn rate of elites that can be trapped, to make these rare creatures a bit less rare -- and thus easier to come by. And more importantly, in order to trap a creature you'll need to have tapped it, which means a random person can't just come by and trap your kills. We don't yet have an ETA on when these fixes will arrive, but Takralus says they're being tested as we speak -- so hopefully they'll be live soon.