for macros please check out the stickies. Tons of information to be found there.

as for being imba, well having 5 shamans at 70 is what gives you that in pvp, the focused burn from 5 lightning bolt crits (or partial crits) can drop or severely hiunder most targets in one round. with only 2 shamans you wont see much of that but you will get noticed less allowing you to hopefuly burn targets down before they get to you. This is as elemental spec btw.