11.   Fast-growing on-line pricing services let their customers quickly compare features and costs of vehicles, and may pose a threat to traditional auto dealerships.

12.   Fixed-wireless services let non-mobile home telephones use wireless technology, through an antenna.

13.   For example, a service might let a driver know about a chance to earn frequent-flier miles by shopping at a store nearby.

14.   If you want to know where your teenager took the car, the service will let you know.

15.   Introduced as part of a site redesign, the e-mail service will let users check mail from any Internet-connected computer.

16.   Its service lets customers access their Internet accounts through local dial-up numbers wherever they may be.

17.   Known as PCS, the service lets customers talk and exchange data on car phones and pagers.

18.   Modeled after search engines like Yahoo, these services let you look up nearly any business or residential phone number in the United States.

19.   Napster, the controversial start-up, says its file-sharing service lets Internet users swap music online.

20.   Most services let you include a photograph of your home.