I'm only five stories into this book but every one has been consistently excellent and I would highly recommend this. First of all, two of its three editors are creators of great web comics (Ryan North/Dinosaur Comics and David Maliki/Wondermark) so it's not surprising this will be in most comic fans' wheel house. Second, and more importantly, at least so far all of the stories are extremely clever and creative, and feature very interesting characters and settings.
For the uninitiated, the conceit of the book is that some mysterious company develops a box that can predict a persons death with a drop of blood. The only problems is that it can't tell you when, and most importantly, it has a flair for the ironic. For example, if the machine says you die of "old age" that could mean you live a long life and it could mean you get run over by a senile old man.
That's a cool setup for ironic death stories, but that's not what these stories are about. They've mostly been about how people deal with such a machine and how it impacts their lives. In most of the stories I've read, all of which have an incredible human element, the lead characters don't die and half the time nobody dies at all. It's really fun to see how creative people got with these stories. And they're all reasonably short so they're a nice diversion from bigger books.
I highly recommend this.