Site metadata can usefully be added to the status folder as a plain text file.
#Linked Data
This metadata can provide formal linked data with regard to the site - including Portable Linked Profiles
We should build on emerging standards.
In the Federation linked-data has then benefit of being able to be aggregated form a range of sources in a manor that is logically consistent and can provide sophisticated processing and reasoning.
Portable Linked Profiles enable individual entities to own their own Linked data profiles in a standardised way that facilitates matching and searching of skills and services - github 
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We're experimenting with full text search of the federation. For the moment this is both easier to code and easier to host than searching the web. search