I would go so far as to say that at the end of the day, the model for the service that Mega is providing may rank up there in importance with Zimmerman's PGP work, and he Kim (and his minions) just may have the muscle, money, and smarts to make it stick.
Actually, a guy just recently linked this
http://news.ycombinator.com/item?id=5084261 in the reddit thread about us (or rather, he linked to his reddit thread with this link, but you get what I mean)...
...from the looks of it, Mega's encryption seems to provide far less data privacy assurance than people seem to think (and I
kind of understand Kim here, Dropbox-like convergent encryption, and thus deduplication, saves a lot of money and pain, and who cares if it provides the means for preemptive screening of uploaded data and could potentially enable various shenanigans by third parties who
already have file plaintexts and would like to know which accounts are involved with storing those files...)