So what does this mean for Blackberry users?

Just recently I've noticed that there is a technological new kid on the block rivalling the iPod for ubiquity. Yes, as if there aren't enough white ear-bud wearers squashed together glassy eyed on the tube in the morning (Yes, I know, I'm one of those killer iPod Zombies, but mine's an original so I got there at least two years before the rest of you with your iPod Minis and Shuffles) there are now a plethora of Blackberry addicts out there, squinting at their emails at all times of the day and night, trying desperately to type out their replies on those tiny weeny keys that make the littel rubber pads on a Sinclair spectrum look like they were built for high speed

"Email users suffered a 10 per cent drop in IQ scores, more than twice the fall recorded by marijuana users, in a clinical trial of over a thousand participants. Doziness, lethargy and an inability to focus are classic characteristics of a spliffhead, but email users exhibited these particular symptoms to a 'startling' degree, according to Dr Glenn Wilson.
The deterioration in mental capacity was the direct result of the trialists' addiction to technology, researchers discovered.
Email addicts were bombarded by context switches and developed an inability to distinguish between trivial and significant messages. Incredibly, 20 per cent of trialists jeopardized their immediate social relations by rushing off to 'check their messages' in the middle of a conversation.