Hello,

I am trying to get in touch with anyone who used to work on this or is 
perhaps still working on it. All the records I find online are rather 
old and there are no people to contact anywhere.

Anyhow, I am wondering why FOAF never became more popular and am 
considering various forms of it's practical usage. I have many questions 
about the specification that I never see properly answered on the web 
pages online, thus I will ask some of them here.

First of all, a single FOAF file is intended to describe a single 
person, right? I can see many situations, where more than one FOAF file 
could be present online to describe a single person (for example when 
FOAF data is automatically extracted from other data sources). How in 
that case, would it be appropriate to link the different FOAF files 
together?

Second, I am thinking of the case where a FOAF file could be used to 
publish public information about a person from an official source (for 
example a list of FOAF files defining the students of a college). In 
this case, some kind of certificate would have to be used to confirm the 
institution providing the data is to be held responsible for the data's 
accuracy and that the data has been untampered with after the 
institution has published it. How does one combine FOAF and certificates 
in a correct manner?

Third, in the examples of FOAF files I have seen online, I notice the 
primary structure of the FOAF web is the <foaf:knows>. How would one 
correctly use FOAF to describe different kinds of relationships (for 
example: friends, colleagues, schoolmates) without confusing any 
existing FOAF browsing software?

Thank you for any answers. :)

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