This looks great, but I hope you have a solid system in place to deal with the huge number of DMCA requests you'll get. Free PDF hosting services (free file hosting services) end up being a target of pirates, but not just that, of automated systems that index things specific to pirated text in order to get clicks.
If you don't get way ahead of these kinds of users, you'll end up with an untenable drain on your resources that will make it easier to shut down than to sustain.
I'm just going to wait and see how things go. I generally improvise; there's not really much prior work (let alone documentation) on the way I run projects, so it's mostly just a matter of figuring stuff out as I go along. One thing that's certain is that I have no intention of shutting down the service. I've run stuff that attracted more abuse :)
I have no intention of acting as a 'shield' against DMCA requests for this particular service (if they're valid, they'll be followed up on, as described on the TOS page), so ideally there shouldn't really be a problem. We'll see how it goes.
Yep, all I am suggesting is that you be prepared to deal with things in as automated a way as possible, like blacklisting naughty IP ranges, automating DMCA take-downs, fingerprinting known bad content and dropping it into a black hole etc...
If you don't get way ahead of these kinds of users, you'll end up with an untenable drain on your resources that will make it easier to shut down than to sustain.