Firefox add-ons Semantic Radar and Operator show you the metadata

Where is the Semantic Web located? It may be hiding in that Web page you’ve just browsed.

If you use Mozilla Firefox, installing the Semantic Radar add-on will tell you if you’re looking at structured data.

This software extension, developed by the Semantically-Interlinked Online Communities project, detects whether a page contains data embedded with RDFa or is linked to a separate RDF metadata file. It lets you know by displaying icons in the status bar.

Another Firefox add-on, Mozilla Labs’ Operator, shows you when microformats (semantic markup in HTML) are present.

To try out these add-ons, load up anyone’s profile on the Identi.ca microblogging site.

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