Businesses use web sites for a variety of purposes. Some sites offer only a brief description and a telephone number, while others provide pages and pages of in-depth descriptions of products and services. While most companies still use web sites primarily as a marketing tool, some are beginning to depend on the web as place to sell their goods. Despite some concern about the security of using credit cards online, many Internet businesses are thriving, and you can now order a wide array of products, including clothes, books,airline tickets, and knick-knacks, from the privacy of your own home. Shopping: A General Overview - about online shopping. Internet Travel Network - traveling? Enter your destination and travel dates, and ITN will find you the lowest fares. Many travel companies and airlines are adapting to online ticketing. Why wait on hold when you can go online? Auto-By-Tel - buy a car on the Internet? Well, not entirely, but this site does match consumers to a local car dealer to get the best deals. Internet Shopping Network - the sale of computer products on the Internet seems natural. Although this site is one of the largest, there are many companies offering computer products of all varieties to their computer -using audience. Lands' End - many catalog clothing companies have adapted quickly to the Internet. These virtual catalogs offer up-to-date inventories, pictures and descriptions of items. Internet.com's Guide to Electronic Commerce - if it's about electronic commerce, you'll probably find it here. Extensive resources, articles and information about how to protect yourself as you buy, sell, and bank online. Electronic Privacy Information Center - what kind of information is floating around in cyberspace? EPIC is a research center dealing with privacy rights, the First Amendment, constitutional values, and the online word . National Computer Security Association - an organization devoted entirely to computer security issues, including electronic commerce and information protection.