Individual Internet domain names - names like company.co.uk or company.com - form the basis of e-mail and web addresses that distinguish firms that are serious and businesslike about the Internet.

The obvious way to set up an Internet presence economically has always been to make do with the facilities that come as part of the deal with your Internet Service Provider (ISP). These deals give you addresses like yourname.demon.co.uk.

The drawbacks of this are clear. First, it gives an amateurish impression. Secondly, your identity is blurred with that of your ISP; will people remember you, or remember Demon? Thirdly (and most importantly for most people) you are effectively locking yourself in to that ISP; if you move your hosting, you have to change your web address. If you want to change to a more efficient, more reliable or cheaper ISP you have to start from scratch in publicising your new e-mail and web site addresses. The longer you use the ISP-based addresses and the more widely you have promoted them, the worse this problem becomes.

So: why not register yourcompany.co.uk? The costs are low, and it is technically a trivial matter to connect a registered address to the web site space and e-mail mailboxes that you get with your ISP account. But most ISPs won´t do it. First, they´ll insist that you buy expensive `commercial´ web space to connect your address to. Then, they charge you non-trivial amounts annually to do the connecting - typically £100 a year for both web and e-mail addresses.

3uk.com does it for free.