Yahoo! is one of the Internet's leading search engines. It is also the largest Web portal, providing links to thousands of other websites. These links include sites from the Yahoo! Directory as well as news stories that are updated several times a day.

Besides being a portal and search engine, Yahoo! offers several other services as well. Some of these services include:

Yahoo! Finance - stock quotes and financial information

Yahoo! Shopping - online retail and price comparison services

Yahoo! Games - online games playable over the Internet

Yahoo! Groups - organized discussions among Internet users

Yahoo! Travel - travel information and booking services

Yahoo! Maps - maps and directions

Yahoo! Messenger - instant messaging

Yahoo! Mail - free Web-based e-mail

A yobibyte is a unit of data storage that equals 2 to the 80th power, or 1,208,925,819,614,629,174,706,176 bytes.

While a yottabyte can be estimated as 10^24 or 1,000,000,000,000,000,000,000,000 bytes, a yobibyte is exactly 1,208,925,819,614,629,174,706,176 bytes. This is to avoid the ambiguity associated with the size of yottabytes. A yobibyte is 1,024 zebibytes and is the largest unit of measurement.

A yottabyte is the largest unit of measurement for computer data. It consists of 1,208,925,819,614,629,174,706,176 bytes (or 2 to the 80th power). It may also be estimated as 1,000,000,000,000,000,000,000,000 bytes (which is 10 to the 24th power).

Example: "A yottabyte contains 1,024 zettabytes."

YouTube is a video sharing website owned by Google that allows users to watch other people's videos and publish their own. It allows both professional and amateur users to post videos, which can be viewed by anyone in the world with an Internet connection. Videos uploaded to YouTube are available at YouTube.com and may also be posted on other websites. When a YouTube video finishes playing, the user is presented with a list of related videos that he or she may find interesting. This can make watching YouTube videos an addicting hobby.