LINKS

Search Engines -
Google - If you haven't heard of Google than you've been on another planet.
Yahoo - Not as big as google, but big enough.

Browsers - There are a few more choices than just Internet Explorer.
Mozilla Firefox - Firefox is the biggest challenge to IE and is growing everyday. Just as easy to operate and with less virus potential. Also, many more add ons.
Opera - Great design and some unique features.

Social Networking -
MySpace - They are the biggest at the moment.
FaceBook - Gaining in popularity