Email has revolutionised the way we talk to each other. For many of us, snail mail is a thing of the past. However, the benefits of speedy communications have come at a price. The past few months have seen commercial and home email users assailed with malicious worms and viruses, underlining the dangers of sharing information online.

The popularity of email, however, may soon be rivalled by a newer and more nimble online communications system, Instant Messaging (IM).
SMH.com