“This is the most important thing we’ve ever done,” says Jeff Bezos. “It’s so ambitious to take something as highly evolved as the book and improve on it. And maybe even change the way people read.”

The many uses of Twitter

“Think of how much more efficiently computing assets are used in this model – and, equally important, the way it renders IT essentially invisible to the users.”

“Ten years later, e-mail is looking obsolete. According to a 2005 Pew study, almost half of Web-using teenagers prefer to chat with friends via instant messaging rather than e-mail.”

Good, detailed instructions.

“The products that get the most votes in each of six rounds will be offered at ridiculous winning prices, and the runners-up will also be sold at slightly smaller discounts.”

“When I get jammed up, here are some of the things I do to chop the block.”

Tips on tagging or keywording your photos

Twitter search engine. Type in a topic and get the latest buzz. Also allows you to set up daily and weekly e-mail digests for up to five search terms.

Personal finance site focused on managing your expenses

Web-based expense reporting tool.