Francois -

Agree - I think knowing who created a tag is an important annotation. The thought was that you could "mix in" another vocabulary's property like foaf:maker for things like that.

Common Tag is simply a small skeleton for representing the basic Tag structure. The hope was people would dress this up with other useful vocabularies for the range of tasks Common Tags could be applied to.

Copied from the Common Tag Quick Start Guide [1]:

<body xmlns:ctag="http://commontag.org/ns#";
about="http://www.bbc.co.uk/musicevents/u2/"; rel="ctag:tagged">
    <span typeof="ctag:ReaderTag">
<span rel="ctag:means" resource="http://rdf.freebase.com/ns/en.u2 "> <span rel="foaf:maker" resource="http://faviki.com/person/jamietaylor#me "/>
    </span>
</body>

J

[1] http://commontag.org/QuickStartGuide


Jamie Taylor, Ph.D.
Minister of Information
Metaweb Technologies, Inc.
Author "Programming the Semantic Web"
www.freebase.com/view/en/jamie_taylor


On Jun 12, 2009, at 10:13 AM, François Dongier wrote:

2009/6/12 Peter Mika <[email protected]>
Maybe others can comment as well, but I do think it's [taggingDate] an important piece of information, e.g. to determine recently popular tags.

In my very humble opinion, **who** tagged a resource with ctag T at time t could also be a very useful information to store. I'm expecting that in the near future we will have rich user profiles, based on sets of semantic tags (semantic tagclouds, if you prefer). Communities of interest, not just individual people, could also be defined in terms of such semantic cIouds. I think lots of interesting computations could be done over that kind of information: personalised reading recommendations obviously, but also relativisation of the popularity of a tagset (and I agree the timestamp is useful for that) to a particular community of users.

For this sort of thing, don't we need a "taggedBy" property?











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