QDOS, measurer of digital presence, has built an interface that lets you search for a FOAF profile. You can search for an individual by their email address or by the URL to their blog or homepage. Their goal is to index and make visible the entire FOAF social graph. If I'm not mistaken they're also helping to extend the social graph by republishing data provided by its users through its primary service (very cool indeed).
Social Semantic Web
Published 9 years ago by James Simmons
Semantically-Interlinked Online Communities (SIOC for short) is a framework aimed at connecting online communities and discussions from blogs, forums, content management systems mailing lists, and anything else. In the current Web, communities such as forums and blogs are like islands - they contain valuable information but are not well connected or queryable. SIOC allows you to connect these sites, and enables the extraction of semantic information from unlimited discussion platforms.
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