What is BookCrossing?
bookcrossing n. the practice of leaving a book in a public place to be picked up and read by others, who then do likewise.
(added to the Concise Oxford English Dictionary in August 2004)
BookCrossing is a social network of sorts for book lovers and book-sharing lovers. And lovers of books and book sharers, too.
Read a good book? Share it by registering it with BookCrossing first, entering your comments on the book, then leave the book just sitting somewhere it is likely to be picked up (and not thought of as something to be thrown away). The next person to read it will follow suit, yada3.
Just a little fun experiment to take part in. Heck you might even make a new friend, since you already know their answer to the question, “Read any good books lately?”