UNIX

- a computer operating system (OS) used by most Internet Service Providers (ISPs) on their 'host' computers as it allows many people to connect to the same resources at any given time.

Unmetered Access

- internet accounts which offer access free of phone charges after you pay a monthly fixed amount.

Upload

- copying from your computer onto a server. Typically someone who has written a web page 'uploads' it from their computer onto a server, from where it is then accessed by other users.

URL

- stands for Uniform Resource Locator. The techie term for the address of a website or document on the web (e.g. www.bbc.co.uk).

Usenet

- another name for the 24,000 internet newsgroups that you can access with e-mail software or by visiting sites like Google Groups.

Username

- a series of letters and / or numbers you input into your computer, internet account or other computer network service to tell it who you are.