Real nice concept - I hope it will be successful.
A few things about the info on the homepage, though:
All files stored SHA-256 encrypted.
"SHA-256 encrypted" doesn't mean anything - SHA is for hashing, not encryption. Please clarify.
Each download extend the expirity with 30 days.
Bad English - A slightly better way would be "Each download extends the availability of the file for another 30 days."