Maggi's new book on Digital Afterlife is now out. The book delves deeper and wider into the topic of Digital Immortality introduced in our Virtual Humans book, and encompasses a wider range of artefacts and behaviours linked to the broader term of "Digital Afterlife". The book was co-edited by Victoria Mason-Robbie (with whom we've collaborated on other projects), and I have a chapter on the techie side of Digital Immortality, again digging a bit deeper than we could in the original book.
More information on the CRC site, or you can buy from Amazon in the US or UK, and all other good booksellers!