1.   The security programs typically alert users with warning messages whenever an unauthorized program is attempting to send information out into the Internet.

2.   As well as bleeping, they can be programmed with the silent option, alerting the user by means of vibration rather than sound.

3.   And recent versions of its software alert users when they are about to open a document that has macros, some of which might be viruses.

4.   AOL will superimpose a menu bar and notification bar on the television screen, alerting the user whenever a new e-mail or instant message arrives.

5.   For example, an e-retailer could alert q users to a sale and beckon them to a Web site for more information.

6.   Hallmark Cards Inc. is about to distribute its new company e-mail policy alerting users to copyright infringement restrictions and official-business-only expectations.

7.   If it is more, the system will alert the user, who will then manually authorize a payment.

8.   If the site has a low rating or has not been rated, the Enonymous Adviser sends a pop up message alerting the user.

9.   Levels can be set on the gauges that, when reached, trigger an audio signal to alert the user that the level has been reached.

10.   Other sites, such as eBay, allow buyers and sellers alike to post feedback on each other, alerting subsequent users to potential reliability problems.