It's Portal Mania!

Can you imagine a web site with so much to offer that you'd never have to go anyplace else? Now visit Yahoo!

Once there was only a search tool. Today, there's free email, personalized pages, customized news, stock quotes, movie reviews complete with local show times, games, chat, message boards, travel, a senior citizens' community and more.

And Yahoo is not alone in its evolution. Excite, Lycos and Infoseek are also adding services at a frenzied pace.

The goal--and the catch phrase--is to become "a portal to the Internet." To Yahoo, it means growing into a full-service web station that keeps surfers under the Yahoo umbrella as long as possible. The reason: more eyes on Yahoo pages mean more advertising dollars.

On Wall Street, the portal trend has helped search engine stock prices reach dizzying heights--some up more than 400 percent in a year.

CBS News Correspondent Mika Brzezinski and PC Magazine Executive Editor Don Willmott took a look at portal mania for the CBS News overnight broadcast Up To The Minute.