I've looked. Jackson has asked the fan sites to take down the pic. So no luck here.

wiki.answers.com/Q/What_is_Jackson_Rathbone%27s_tattoo..._it

I think he only has the one tattoo on his hip, at least he said that is the only one he has so far in an interview. but maybe he got a new one that i dont know about... sorry i cant be any help

It is a heart on his shoulder with the word "mom" on it, I don't know if it says anything else, but I'm sure it's written mom

i did not even know he had a tatoo and im obsessed