This novel won a Philip K Dick award which is OK with me because I like Philip K Dick's and Rudy Rucker's stories.
The book is essentially a sequel to Software which also won the PKD award. This seems a bit of a waste of an award as the book doesn't actually differ from the first in style or quality. It is apparently the second in a proposed trilogy - perhaps RR discovered that could win prizes with this format so he stuck to what the punters wanted!.
I judge that it isn't neccessary to have read Software to appreciate this book but it is pretty obvious that it has been left open-ended for the third part. I found this a bit annoying as I like novels to be self-contained and to have a satisfatory ending with most of the loose ends tied up.
Given the above gripes, it's a worthy follow-up to Software. Strangely enough, given the task of nominating a Rucker novel for an award I don't think I would have chosen either of these two. White Light is much more innovative and deals with maths and physics in a way I have never seen before in SF, it is also very funny in parts. Take this as a warning - if you don't like humour (absurdist) in SF then steer clear of Rudy Rucker.
The story is actually about 'boppers' who are free robots who live in a city on the Moon. All the computers/robots left on earth are 'asimovs' i.e., they obey the three laws. Boppers are robots which have evolved by being programmed originally to regularly visit 'The One' which is actually a radition source intended to create random mutations in the software. The boppers reproduce by rebuilding themselves every 10 months further increasing the mutations. The story is told through various human and bopper characters in a slangy jargony style with the occasional bit of sex and even more occasional bit of violence. A few his characters seem to be alcoholics or drug addicts and other such life-forms. All in all, not one to lend to your mother!!!