[bieh]

Good questions!

1) 20mb cap at the moment - typically ebooks are small though, <1mb. If I start running out of space on the machine I'll re-evaluate that - for reference, there's about 11gb used at the moment, with around 20k books total uploaded. Plenty of capacity left.

2) See 1.

3) Free while it's in beta. I only launched a week ago, so there's still a bunch of things that need to be done. And I'm not making money off it, but the total investment is a small AWS instance and a domain name, so I won't go hungry as a result of it quite yet :)

4) No. They're automatically sorted into public/private based on copyright status at the moment. Fairly high up on my TODO list is a "make this private" button for things that you upload.

5. It uses Calibre (well, ebook-convert, part of the Calibre suite) behind the scenes. So pretty much any document type should be able to be used. In practice because I use epub internally, you'll get the best results with that - and you won't have to wait for the conversion process when you upload.