I have an ebook reader and find it very convenient in a number of situations - e.g. to read while commuting by train or bus (i.e. no stable internet connectivity), or to read while enjoying the sun on a bench.
NetBSD's documentation is partially available as PS and PDF, but none of them deliver a good experience on an ebook reader, and they only produce garbage when converted to other formats.
EPUB has been specifically designed for ebooks and, unlike Kindle ebooks, it is easy to convert to other formats for use on non EPUB-compatible readers (i.e. Amazon Kindle).
I have managed to create EPUB versions of the NetBSD Guide, NetBSD Internals and PKGSRC Guide and made them available on my server in case others would be interested: https://defert.com/netbsd-guides/
