Snow Crash by Neal Stephenson - 4 out of 5.
I'd not read any Neal Stephenson before & was lulled into a false sense of what I'd be getting by a preposterous (if strangely compelling) Pizza Delivery opening scene. Set in an alternative present day, our main man is one Hiro Protagonist, a samurai sword wielding computer geek.
There is some great technology depicted throughout the book, The Metaverse itself, the RatThings, Reason (a big gun) and some stuff that pre-dates things we all now use, such as wireless broadband & even Google Earth.