1. Introduce a random swap type button. A mystery swap. You send one of your books and recieve something unknown in return. The RISI engine dictates not the swappers. 2. Book Review Round Robin. A book does the rounds with a small notebook attached which people jot down their thoughts / criticisms /...

Apologies if this has been suggested before but how about a listmania thing as Amazon have? Purely selfish of course as I am looking for recommendations in post apocolyptic novels eg down to a sunless sea, on the beach, planet of the apes etc plus autobiographies