I actually think Mega was third, and Securesha.re second, as Blindvault.com has been up for around half a year. It's not free though, but it compares in that fi

I actually think Mega was third, and Securesha.re second, as Blindvault.com has been up for around half a year. It's not free though, but it compares in that files are encrypted user-side and if you don't have the key you can't tell if there are files, what the content is, etc.