Diablo III- Skills Article XXXV: The Demon Hunter, Primary Skills- Entangling Shot

Entangling Shot: Deal 75% weapon damage as Shadow damage and entangle the target and up to 1 other enemy nearby, slowing the movement of affected enemies by 60% for 2 seconds.  Generates 3 Hatred.

Basically My First Slow Attack, this skill is an excellent way of making sure things can’t get where they’re going (i.e. in your face).  The fact that it affects more than just the target you actually hit with it makes it excellent for munging with large groups of enemies, especially as the slowed ones will get in the way of those who aren’t hit- giving you more chances to entangle them as well.  This skill is immensely useful when paired with damaging area of effect skills, particularly if said skills drop a lasting area of effect rather than a single burst.  This effect can also compound with the other skills you have access to in order to make traversing the battlefield particularly hard for your enemies.  Just don’t rely on it doing anything to ranged attackers.  If you don't like Hungering Arrow, you probably want this- rather than being a way of dealing out a good deal of damage, it's a good way to force enemies to slow down so you can pump more shots into them with other skills.

Chain Gang: Deal 75% weapon damage as Shadow damage and entangle the target and up to 3 other enemies nearby, slowing the movement of affected enemies by 60% for 2 seconds.  Generates 3 Hatred.

Chain Gang makes Entangling Shot even more fun against large masses of enemies, and can let you really muck up their ability to go anywhere.  The description might as well read ‘Screw with your targets even more.’

Shock Collar: Deal 75% weapon damage as Shadow damage and entangle the target and up to 1 other enemy nearby, slowing the movement of affected enemies by 60% for 2 seconds.  Also deals 18% of weapon damage as Electric damage over 2 seconds to each affected enemy.  Generates 3 Hatred.

Shock Collar is more of an amusement rune than anything else- the damage is pretty negligible, but it lets you inflict a minor punishment on your enemies for being near other enemies.  Not all that big a deal when Entangling Shot itself already punishes them for standing close together by keeping them from going anywhere.

Heavy Burden: Deal 75% weapon damage as Shadow damage and entangle the target and up to 1 other enemy nearby, slowing the movement of affected enemies by 60% for 4 seconds.  Generates 3 Hatred.

Heavy Burden makes Entangling Shot more effective against small groups of enemies, as opposed to Chain Gang’s ability to improve its use against large groups.  The increased duration gives you plenty of opportunity to unleash other tricks on your targets, and makes Entangling Shot quite worthwhile on many bosses as well.  You’ll probably find yoruself switching back to Chain Gang if you’re fighting especially large numbers of enemies, though.

Justice is Served: Deal 75% weapon damage as Shadow damage and entangle the target and up to 1 other enemy nearby, slowing the movement of affected enemies by 60% for 2 seconds.  Generates 6 Hatred.

If you happen to run out of Hatred a lot (and many Demon Hunters do), and you don’t need the improved control of Chain Gang or Heavy Burden all that much, then you may have a use for Justice is Served.  The improved Hatred generation can be a real boon, particularly if you rely heavily on draining skills like Rapid Fire, Multishot, and Cluster Arrow.  Other than that, this rune is sadly unremarkable.

Bounty Hunter: Deal 75% weapon damage as Shadow damage and entangle the target and up to 1 other enemy nearby, slowing the movement of affected enemies by 60% for 2 seconds.  6% of the damage you deal with this skill is returned to you as Life.  Generates 3 Hatred.

You shouldn’t need Bounty Hunter.  Entangling Shot doesn’t do a lot of damage, and your whole intent is to keep from getting hit in the first place as much as possible.  This is, however, one of your only two ways to heal yourself with a mouse-skill, so if you really need the healing that badly, jump on it.  You shouldn’t need it though- analyze your other skills, and your equipment, first and see if you could be doing more to evade or prevent damage to begin with.