Depends on my defintion of time travel. Have you ever read the book timeline. Its got some very intresting theroys that it covers.
Quantum foam and all.
Regardless acording to quantum theory not only must there be multiple universes there must be a universe in the multiverse that represents every point in time ever in history, and in the future i would imagine to a point where it begins or something like that. I'm not sure who much i beleive this theory even though there is evidence that can so far only be explained with the quantum theroy.
But by traveling through time to another universe you wouldn't afferct yourself at all.
So it might be intresting to experiment with other universes playing god so to speak to see what you can cause to happen.
However it might send rifts througout other very close universes in which who knows what might happen you might institanously create an infinite more amount of yous.
I think it would fuck with this the very fabric that represents the multiverse.
Its like a red light wave shining on a wall and showing up blue. Its just not possible within the spectrum.
Chances are everything is compeltly false then again if anything is possible everything i just said could be true in some universe
[/crazyed rant]