>A book about a hacker/entrepreneur who sets out to change the world and comes across all sorts of wacky scenarios? Charles Stross's Accelerando fits the bill

>A book about a hacker/entrepreneur who sets out to change the world and comes across all sorts of wacky scenarios? Charles Stross's Accelerando fits the bill perfectly, but it's way out there with singularity stuff, unlike Cryptonomicon, which may not be what you want. His Halting State is set in the near future, with a robbery of an MMORPG that involves real money with real bad guys getting involved.