21.  Pittsburg High School is launching an increasingly popular service called Internet Student Information System, ISIS.

22.  Others, including utilities, telephone companies and popular online services, experienced surging demand.

23.  Portals generally offer popular services like Web page searches, news headlines and free e-mail.

24.  PCS marries wireless phoning, of the kind that cellular companies already sell, to other popular services.

25.  Small companies like PacketVideo in San Diego are hoping that live video delivered to wireless devices can evolve into a popular service.

26.  So far, that race is being led by giant America Online and by Yahoo, the most popular service on the Web.

27.  Specifically, I wanted to see how much investment research I could do, and how cheaply, using the popular on-line services America Online, Prodigy and Compuserve.

28.  Some commanders are bending the regulations to protect popular gay service members and others are using their latitude to drum homosexuals out unfairly, gay rights groups say.

29.  Still, if you regularly check the weather, headlines, sports news or other popular services, broadcast service has plenty of appeal.

30.  The company also operates a popular service that allows people to send faxes to a central server, from which they can be forwarded.