What Should I Read Next?

"Enter a book you like and the site will analyse our database of real readers'
favourite books (over 20,000 and growing) to suggest what you could read next."

This works pretty well! I entered Valis by Philip K. Dick and this is the list of recommendations it proffered:

"These are our suggestions based on readers' recommendations.

The Divine Invasion - Philip K. Dick See Amazon UK | US
The Crystal World - J.G. Ballard See Amazon UK | US
The Worm Ouroboros - E.R. Eddison See Amazon UK | US
Space is the Place: The Lives and Times of Sun Ra - John F. Szwed See Amazon UK | US
The Soft Machine; Nova Express; The Wild Boys: Three Novels - Burroughs William S. See Amazon UK | US
This Is the Way the World Ends - James Morrow See Amazon UK | US
Tales of Ordinary Madness - Charles Bukowski See Amazon UK | US
Silence: Lectures and Writings - John Cage See Amazon UK | US
Numbers - John Rechy See Amazon UK | US
The Brotherhood of the Grape - John Fante See Amazon UK | US

More results

To get more accurate suggestions, add more books you've loved to your list - to do this you'll need to register. You'll also be building our database and improving everyone's suggestions."

Cool!