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Web 2.0 allows users to share information, interact through comments, and collaborate by creating wiki pages and uploading videos. Blogs let individuals post personal updates that others can comment on, with the most recent posts appearing at the top. Wikis enable group editing but information may be unreliable since anyone can change text. Media sites permit sharing music and videos for others to rate, comment on, and view download histories. Social networks facilitate connecting with friends and sharing photos, videos, and messages.





