I use my DX exclusively for reading scientific papers and stuff from Project Gutenberg, I just connect it over USB and copy PDFs/epubs/txt/html on there and eve

I use my DX exclusively for reading scientific papers and stuff from Project Gutenberg, I just connect it over USB and copy PDFs/epubs/txt/html on there and everything works just fine. So yes, it works just fine without an Amazon account. Granted I bought mine without any expectation to buy ebooks, so I can imagine this being unsatisfying for people the expect to actually purchase DRM books...