I'm with you, Worldwalker. I assume frankenbooks is in the pro-frankenbooks camp, and I dare say, he/he/it may be hawking something, but seems to lack the linguistic tools to do so properly.
Personally, I would interpret the term “frankenbooks” to refer to an (as yet unrealized) publishing venture in which the user would obtain some of the content from a dead-tree formatted publication, some from an eReader, and/or a website and/or an audiobook.
Francis Chan seems to be attempting this with
Crazy Love which book has many references to the above website.
It could also be the next comedy blockbuster from Mel Brooks. It could be the next "SpaceBalls!"