Jetée

I've trusted orbitfiles for a while now, and its quite affordable.
(the only rub is I kept two of my accounts as free there, and I let them lapse in terms of "continuity", and subsequently found all of my files were deleted 45 days later. They used to give 30 days, plus a 60-day probationary period to log back in to show you still operate the account, but I've got a lot on my plate, and I forgot, by just two measly days. )

I'd also highly recommend Divshare.

__________________
As human beings, our greatness lies not so much in being able to remake the world (that is the myth of the Atomic Age) as in being able to remake ourselves.

—Mohandas K. Gandhi