I've searched already posts, but didn't found anything
So if you do AV, and you're in a position that you need to defend a Graveyard, you can walljump ontop of the "flagthingy", so melee can't hit you. Only works for ranged classes ofcourse, or healers.
To get on the flagthingy, just move your pointer at your minimap to N, S, W or E, and walljump ontop. Hf with it!
screen:
http://img403.imageshack.us/img403/6346/avjumpvs5.jpg