>What intrigues me more is wondering whether the distance actually traveled relative to the earth has any bearing. For example, most texts use the example you have provided above. What if your journey bounced you (many millions of times) between the earth and the moon at the speed of light? Or extrapolating further, you only bounced between two positions separated by a fraction of an inch - lets call this a mega-vibration. Are you still moving forward in time at a considerably reduced rate relative to nearby objects that are not subject to the mega-vibration?

I personally think that time is relative to one's position; the act of moving has no bearing; it's the position (at any point in "time") that affects the progression of time. Gravity warps time-space; it's one's position on this fabric at any point in time (space) that influences how time is passing. In the case of massive sources of gravity (ie. black holes), time effectively stands still due to the tremendous warping of time and space.