Pure fun. I don't know if the author is trying to get us to think about our dependency on the internet and on electricity and all the other mod cons or not, but all it seemed like to me was pure fun.
When an emerging consciousness begins to use Blake's web-enabled refrigerator to talk to him, the world as we know it comes to an end. The shut-down of the internet, and all electricity for that matter, changes human existence in an instant. Not a new theme, perhaps, but certainly this book has the most unique and hilarious take on it I've seen.
New religions are formed (anti-fridge and pro-fridge,) people resurrect archaic technology, LARPing and Cosplay come into their own, and ravens talk. It's absurd, ridiculous and completely entertaining.
This was miles away from anything I usually read but hey, a departure from the beaten path is a good thing and this one was a definite departure!