This document provides a high-level overview of various aspects and applications of Web 2.0, grouping them into categories such as bookmarking, collaborative writing, content aggregation, digital storage, education, employment, events, food, games, health, mapping, mobile technology, music, news, networking, organization, philanthropy, photos, real estate, retail, search, social media, sports, travel, video, and web development. The document aims to explain the broad range of services and tools encompassed by the term "Web 2.0".
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