I believe that Shared Ruthlessness should be running 24/7 during a raid by at least 1 Zerker. Its a little dps to add to the raid total and every little bit counts. I've got a mash key (#3), that consist of the necessary disciplines we use, and AA's as well, and I am certain it is very much like yours. The second mash key (#2), is Shared Ruthlessness, Binding Axe, Bloodfury, Bolstered Frenzy (Which I prefer), and since one of these seems to pull agro (I think it's Binding Axe). I put Silent Strikes at the end of the line. It is a 2nd Mash Key. I find conflicts with this Shared Ruthlessness popping open while the other keys are still down, and I using Bloodfury in the same bind key and sometimes find myself lol, low on hp's . My intentions are too put Shared Ruthlessness in my #3 Mash Key, so it fires every time I am mashing that key! Which is repeatedly. At the end of my #3 Key is Dichotomic Rage, Sapping Strikes, Shared Ruthlessness, then finally Jarring Jolt to make him not so angry at me. With the addition of Dicho (reducing some agro) and Jarring Jolt I rarely take agro off a decent Raid Tank from my #3 key or my #2 key. I would like feedback about this, specifically concerning binding Shared Ruthlessness to my main mash key. I thought some of you might have an opinion to add about it. I did kill a few mobs with it, and it seemed to work fine. What do you think?