The Interactive Glossary: Defining the Net

Scareware
Screenshot
Script
Scroll Bar
Search Engine
SEO
Server
Shareware
Shockwave
Signature
SLIP
Smiley
SMTP
Social Networking
Spam
Spider
Spyware
SSL
Streaming Media
String/Search String
Syntax Error

SPAM

Originally just a canned sandwich filler product, spam now also refers to the practice of blindly posting commercial messages or advertisements to a large number of unrelated and uninterested groups and blogs, and bulk e-mailing unsolicited commercial messages.

Learn more: Ten Tips to Stop Spam