51.   At that price, some experts question whether even well-heeled businessmen will use the service as more than a last resort, if no other phones are available.

52.   At the same time, assuming enough people actually use these services, restaurants can apply sophisticated data-processing techniques to their customer relations strategies.

53.   Audrey Midtskogen used the service last month when she had a baby at Good Samaritan Hospital in Suffern, N.Y.

54.   Based on the high turnover of subscribers and the response, Baen is convinced that customers use the service to sample works, not read them in their entirety.

55.   Before you use any service, Hoofnagle advises, always read the privacy policy.

56.   Both men have used the services of InfoCision Management Corp., an Akron, Ohio tele-marketing company that solicits contributions for Republican, conservative and religious causes.

57.   -- Using the services at an IRS site that offers electronic filing.

58.   A disclaimer at ManicMail warns against using the service for abusive, offensive or illegal purposes.

59.   A busy telephone signal often greeted new subscribers trying to use these services.

60.   A mother of five, Dorn expects to use the service often.