I read this a long time ago and loved it then. (I actually read it after Steve Jackson raved about it and printed an excerpt in an issue of Pyramid
magazine.) But if I were to reread it, I suspect I'd find it hadn't aged well.
Hiro Protagonist, "black samurai hacker pizza delivery guy," was kind of cool, in a geeky hanging-a-lampshade-on-the-ridiculous-protagonist kind of way, as was the teenage girl and her bad boy lover who's carting a portable nuclear warhead around with him. But I honestly can't say I remember much about the plot.
Probably a good book to read for anyone interested in cyberpunk, and it did get me started as a Neal Stephenson fan.