Riffle update: Free invites for Pop Candy readers!

Yesterday I wrote about Riffle, a new book-discovery site that features recommendations from several book bloggers and experts in various genres. (I was asked to be an "expert" in the comics/graphic novels category and compiled this list of recs.)

The site is still invitation-only, and I heard from many of you who were interested in joining. Today I'm happy to report that there was so much interest...