My about this level I gave up on my voidwalker. My damage output for oulassed the VW'ers tanking ability, and I swihed to drain tanking with scy - I
take all but the first hit or two andhainpull for hours on end :D However, I'lllear up a few threat-related things for you: Torment adds a set amount of threat to a mob. Damage also adds it at a rate of 1:1, against the mob you're attking, unless you have talents to rede threat. It's very easy to outdo the void walker's threat, however. Healing does half a point of threat for every point healed (i.e. Drain Life or bandaging), however it's also divided among all the mobs who are aware of you. Another mob thatomes in range will trigger the VW's AoE threat ability. However, this adds very little tual threat - it's basally enough to keep you from drawing aggro through healing from Drain Life but nothing more. Now, if you pull another mob and you're Draining, he mayome straight to you sie the VW has no threat on him (hasn't hit him), whereas you have healing aggro. The same thing happens when you pull a third mob after the AoE taunt has gone off - there's nothing to keep the mob attking your blueberry, so he runs straight to you at the first point of healing.
If
your VWant hold aggro its basally bause past level 60, voidwalker + warlk with at least 200 spell damage, even with just 3 dots and wand = warlk aggro. Well, at least thats the way it goes for my and my friend... we just gave up on blueberry and both now drain tank, its way more useful.