Indexes: a system used to make finding information easier.

Keywords: the words that are used to reveal the internal structure of an author's reasoning.

Libel: defamation by written or printed words, pictures, or in any form other than by spoken words or gestures

Link List: contains a null reference

Math Symbols: a listing of common symbols found within all branches of mathematics

News Feed: a data format used for providing users with frequently updated content.

Peer-to-Peer: computing or networking is a distributed application architecture that partitions tasks or work loads between peers.

Phrase Searching: is used to search for words as phrases.

Plagiarism: is defined in dictionaries as "the wrongful appropriation, close imitation, or purloining and publication, of another author's language

Podcatcher: a computer program used to download various media via an RSS or XML feed