microformats may well represent a path from where we are today to the [lowercase] semantic web. If so, one of the first waypoints along such a path could be the emergence of aggregators capable of taking advantage of suitably marked-up content. Applying a 'microformat' approach to tagging, Technorati introduced the rel="tag" approach to marking-up tags. Technorati also supply the corresponding aggregation service, e.g. see posts tagged with microformat . Given this minimalist approach to tagging, the hReview specification comes as something of a surprise. It seems to represent a format developed independently of the environment in which it is most likely to be used. The rel="tag" approach makes a major, simplifying assumption. This is that the tag refers 'to a major portion of the current page (i.e. a blog post)' . I am assuming that it could apply equally to a blog entry in an RSS/Atom feed. Thus an aggregator can associate a tag with two p...
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