This year's face-off between the big multimedia encyclopaedias has seen them both facing a brand new threat. In much the same way that Microsoft's Cinemania package was rendered obsolete by the Internet Movie Database, both Encarta and Britannica in their 2006 guises are fighting the growth of online resource WikiPedia, as well as the Internet as a whole.

The result is that both products are now more Web-reliant than last year, and you can also pick them up a little cheaper than was possible a few years back. But are they still relevant in a world where Google is becoming the starting point to finding things out? Let's take a look.

Click on the 'NEXT' link below to find out more.