Every so often, over the last few years I keep going back to listen to this series.
The Fourth Ambit
http://www.ambitgroup.com/fourth/It's a series of 9 hour(ish) long episodes, set in a future with what was presumably the internet after it has become a near-reality, all pervasive part of life.
The main character...........actually, just go and listen to them.
I think it's brilliant, it's very well produced (the best audio drama I've heard to date) and was written by Dawson Nicholls (who appears to have moved to Australia and, sadly, has never produced a similar piece of wondruss work as this since).
As far as I know, it never gathered a lot of attention when it was first produced but the site's been sitting there since at least 2003 or so.
There are a number of ideas spread throughout the episodes and, personally, 8 was the best.
Enjoy.