Luminarium, by Alex Shakar

This book was not easy to read, in that it wasn't all that much fun even though it did hold my interest right up to a rushed and rather unsatisfactory ending.

The concept is that Fred and George are identical twins, and had been co-CEOs of a New York based software startup that builds virtual worlds.  They were ripped off (or hostilely acquired due to their inexperience and/or incompetence, hard to say).  It is 2006 and 9/11 memories are still strong for all the characters in the novel.   George ends up in a coma.  Fred is a bit of a nut case loser, and the hero of the story.  He becomes a subject for a neurological study while believing himself to be communicating with his brother through some ambiguously defined computer network.

Yes, it sounds intriguing enough to pick up, but after having read it I really wouldn't recommend it to anyone.

Luminarium