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Sometimes a user might need an immediate answer to a question or a definition of a term.

Teamspinner allows teams to create custom environments for their projects. Users can add Wiki text, lists, discussions and files.

The goal of reQall is to serve as a memory tool. The site collects and aggregates personal data.

A massive directory of Web 2.0 applications and services, Go2Web20.net contains 2,390 site logos as of mid-May.

Twitter is a Web-based service is designed to keep people in touch with friends, family and co-workers through quick, short and frequent messages. Unlike e-mail or blogging, Twitter focuses on short updates throughout the day. Users can post brief updates, limited to 140 characters, from their desktop, personal digital assistants or cell phones. Business users can use the site to keep updated with colleagues working on a project, for example.

Modern information operations cover a range of capabilities from psychological tactics to cyber warfare. They are designed to provide U.S. warfighters with a crucial edge on the battlefield by preventing opposing forces from effectively gathering intelligence or coordinating attacks. Information warfare provides commanders with a flexible tool that can be used to subtly influence local opinion in an anti-insurgency campaign or cripple enemy communications in a major conflict.

A longtime leader in computer and electronics research, IBM is committed to furthering nanotechnology research.

The NNI was launched in 2001 to coordinate the U.S. federal government's nanotechnology research and development.

Nanostructures have a range of applications in electronics and materials research, but before they can be mass-produced, the processes to grow them consistently and accurately must be understood.

This academic institution is heavily involved in nanotechnology research and hosts the National Science Foundation's Nanoscale Science and Engineering Center on its campus.