Author Cory Doctorow will do an "in-game virtual booksigning" on July 24: "To do that, readers just have to bring their copy of his book to the event, and set it on a small table in front of Cory. To autograph it, Cory simply has to mouse-click the book, which causes a digitized picture of his real signature (with author's dedication) to be superimposed on the cover. So signing the virtual edition of his book requires about as much effort as it does when he takes pen in hand to autograph the tree-based version."