So yes, blizzard patched death grip in air so that you couldnt grief people but there are still ways around this that are quite fun, make sure if you do this you have the slowfall cloak from Skettis as it will save u from repairs if you are wearing your gear
Read the entire post b4 u start flaming, fyi the solo way is much easier to do but cannot be done in battlegrounds
With Partner
First method (with partner), use some1 with a "vehicle" mount, this means any of the mounts that allow a passenger
So u find some1 near a cliff, my fav place to do this is AB lumbermill or eots by the bridge b/t BE and DR ruins
Drive said vehicle over cliff
Hit eject button
Death grip
??? LOL THEY COMING
Dead.
SOLO METHOD
And...method 2 (solo), pick up tailoring, make flying carpet, enjoy your griefing which is much easier to do solo