Just as important as the 200 lines of code that made up the e-mail software was Mr Tomlinson's elegant way of organising the addresses of people and the computers that held their e-mail account.

BBC: H@ppy birthday to you

Luisa also lets us in on a little secret - the vintage clothing shop Cavalli e Nastri, which stocks elegant fashions from the the 19th and 20th Centuries.

BBC: The Real Milan

The categories range from "Pain Free", which tries to find who is making shopping online as straightforward as possible, to Best Family e-Business, which targets smaller online retailers such as hotel chain Elegant English Hotels and pharmacist Allcures.com.

BBC: Shopping and voting