Links

Some useful links.

Hardware Reviews

Anandtech
Tom's Hardware

News

Linux Today
Slashdot
The Inquirer
The Register
BBC news

Website Authoring

PHP.net
W3C HTML Validator - checks that your HTML code complies with the W3C standards

Interesting Opensource projects

Aside from obvious ones (Linux, Firefox, GNOME, KDE, apache etc.) I find the following projects personally interesting:
iPod Linux - Running Linux on your iPod
NSLU2 Linux - Running Linux on the Linksys NSLU2 network storage device

Networking

IANA TCP/IP Ports assignments

Other Interesting sites

IMDB - Internet Movie Database
WikiPedia - A free content encyclopedia, which is also one of the best examples of what can be achieved with a Wiki