As the title reads, please read this article from the legendary ChainFire developer who hacked the SGS III.
He explains in detail on Samsung and there attempt at "monitoring" what we are doing and for whatever possible reason.
So you have to ask yourself, do you really want to hack your shiny new phone.
P.s. Triangle away and restoring to an entirely stock state is fine and easy enough to do for warranty purposes. I have personally gone trough this procedure and works flawlessly. ChainFire recommends the procedure to be done on firmware ALE8 (Stock UK).
In anticipation of what Samsung are up to, I have reverted my phone back to stock. To be honest, no real benefit in rooting, custom rom was good and fast but unnecessary. The phone is perfectly fine on stock. Battery life and performance is amazing. No need to hack.