Finished Avogadro Corp. by William Herting yesterday.  Interesting concept an AI that emerges when developers come up with code to make emails easier to write.  The AI never 'talks' to people, but manipulates them through email with self preservation in mind.

The book seems to be written by an office geek.  The breathless accounts of cubicle jockeys racing against time to thwart rogue coding seems way beyond the realm of possibilities.  He does a decent job of it though, enough that it isn't too distracting.  

At once point, the description of the Corporation makes it an obvious Google like company, even including floating data centers reminiscent of those structures that won a Time innovation award in 2008.

Looking up the above link, I see there is a sequel.  I couldn't possibly add another to my list.