Tag mania sweeps the Web | InfoWorld | Column | 2005-07-20 | By Jon Udell:

When I first wrote about social tagging services last year, Flickr (for shared photos) and del.icio.us  (for shared bookmarks) were among a handful of tag-enriched applications. Nowadays you can’t turn around without tripping over a new one. Three newcomers are My Web 2.0, Rojo 2.0, and Swik.

…Is this a fad or a real breakthrough in information management? I say both. Tagging has attained the elusive cachet of coolness. New taggers feel an initial thrill of empowerment. Venture capitalists, sensing the buzz, are looking to amplify it.

When the novelty wears off, though, I think that tagging will have altered the information landscape in a fundamental way. Here’s an example: I’m often asked a question that begins with “Do you have any pointers to … ?” The answer to such a question is a set of URLs. Two years ago, I would have collected those URLs and transmitted them in the body of an e-mail. Nowadays I’d collect them using del.icio.us tags and send only the del.icio.us URL.