Voice over IP is growing quickly and Skype is one of the most popular services you can use to make free or low-cost calls via the net.

Previously, only other Skype users could contact you via the service, but as of version 1.2.0.48 there is the option of having a Skype In phone number and voicemail for €11.50 a quarter (£8 approx). This is a little expensive, but it does make Skype attractive, especially to businesses.

The cost for making calls to normal PSTN phone lines is competitive, but where Skype wins is its simplicity to set up and use. Call clarity is good, it comes with a conference function and you can send instant messages.