I know of other projects with a similar idea byt dont know anything about them.
Its a good idea especially for content creators and designers in many fields.

I have a couple of questions:

Will there be a way to browse the available uploaded files?
I might not know what I would like to download until I see it.

Will there be copyright implications?
Will there be a monitoring and filtering system?
Lets face it there will be some people selling cracked software
and potentially illegal and questionable content.