I would say its by far the worst Cory Doctorow book i've read (and I've read a large number of them). It reads like an advertisement / fangasiming for all of his favorite things online. Lots of name dropping.

There are a large number of elements of the book I liked. I really want to build stuff, even tempted to try to get re-involved with the local hackerspace. I found the ending a bit disappointing.

I'm not sure I'd recommend it, but I don't regret reading it.