The kiss that ends your life
They also spell the complete doom for your free, personal time, especially if you use them for business and not just for personal stuff.
The trouble is, once your customers know you have a Blackberry, you're expected to be always available to them. After all, you carry your email with you wherever you go now and it's also a phone; why didn't you answer that email I sent you at 3am? It's even worse if they have one of these gadgets too and they never leave it at home; you're suddenly at the mercy of a workaholic who monitors his or her email 24 hours a day, 7 days a week.
I suppose people once thought about cell phones the same way, too. But cell phones are nowhere near as convinient or multifunctional as a Blackberry, no matter how sophisticated it is. It seems to me, however, that every advance in telecommunications technology serves to eliminate free, personal time, which is the exact opposite of what futurists of the 1950s and 60s believed.
This, of course, should not be taken to mean that I'm anti-tech or that we should abandon all technology and return to the farm(life on the farm without technology was no picnic in the park, either, despite what some people think). It just means that we really should be careful about how the technology is used, especially if it is brand new.
And now for something really exciting! Blackberry / Futurist