Feat suggestion: would be nice if you allowed for a TOC to be attached to book description, to ease a quick glance over the contents. Occurred to me when browsing http://hackershelf.com/book/344/speeding-through-haskell/ - as the target link has no TOC, if someone took care to provide a TOC on the Shelf, I'd know better what to expect.
After more browsing, the topics list at http://hackershelf.com/topics/ looks like it could take some more care: probably case insenitiveness, maybe fix the strange duplication of letter topics (or does it have some hidden purpose?), maybe put a list of quicklinks to letter-sections on top.
Just some feedback from a random Internet guy ;) the site does a very good first impression!
Thanks :) The TOC sounds like a great idea, obvious in hindsight. The case sensitivity of the topics is just a reflection of my laziness, I should have taken care of that a long time ago. Hope you keep finding the site useful.
It's not, and has never been, purely for technical books. The non-free submissions always happen when the site goes viral every few months, which is inevitable with any crowdsourced collection. Already working on removing those. You can flag a submission that goes against the guidelines. Thanks for the pointers.
http://www.reddit.com/r/haskell/comments/1af3iw/9_best_free_...
http://www.linuxlinks.com/article/20130316105209238/BestFree...
and scala staircase 1st ed http://www.artima.com/pins1ed/