use the rel-tag microformat which uses the rel attribute with value "tag" (i.e., rel="tag") to indicate that the linked-to page acts as a tag for the current context. See also Annotation Collective intelligence Concept map Enterprise bookmarking Enterprise social software Expert system Explicit knowledge Human–computer interaction Information ecology Knowledge transfer Knowledge worker Management information system Metaknowledge Organisational memory RRID Semantics Semantic web Social network aggregation Subject (documents) Subject indexing References Collective intelligence Computer jargon Information retrieval techniques Knowledge representation Metadata Reference Web 2.0