I received a copy through librarything's member give-away programme.
I enjoyed this short book introducing me to the concept of citizen science. Being a sci-fi geek, of course I'd heard of SETI, the project crowdsourcing computing power from around the world in the search for radio signals from extraterrestrial civilizations. I didn't know about the many other projects that are discussed in the book, some that require very little effort to be involved in. I will be investigating these and Chandra Clarke's site.