PUBLIC MARKS with tags collection & tags

A collection of powerful tools for media enthusiasts with a Macintosh using Mac OS X. Media Rage can read and write information stored in MP3, AAC/MP4, FLAC, AIFF, WAVE, BWF, and Ogg Vorbis audio files as well as EXIF (read only) tags in digital images. Media Rage can assist you in cataloging, organizing, sorting, and updating thousands of audio files with ease.

Chinese social network service with tagging

Collaborative people search with bookmarking and tagging