(Copied from here.)

It's been a year since I last took a look at the overlap between the SIOC Project and Microformats (mf). I've been trying to catch up with recent developments, especially the cite-rel draft by Ryan King and Eran Globen.

I admire the Microformats resolve to "solve problems", rather than provide generic things that may in the future be used for X or Y (even though I believe that too is important, or else I wouldn't be a Semantic Web researcher!). I also think that there is no good reason that both the Semantic Web and Microformats communities can't work together (despite arguments like this). There are people on both sides who strongly feel that the other is going in the wrong direction, but it would be a mistake to let any such voices dominate. Both communities are trying to add semantics in the Web, and using things like GRDDL and Micromodels / mf RDF representations, the existing work from both sides can be reused.

So, with this in mind and in terms of SIOC, I hope that we can use Microformats to help create closer interlinks between the objects that make up online communities - I'm talking mainly about posts, forums / blogs, communities and user profiles. I'm going to start with three or four things I want SIOC to do for Microformats and vice versa, and then we can go from there. These correspond to some of the links shown in my "connecting discussion clouds" picture.

One User, Many User Accounts

At the moment, it is quite difficult to identify all the posts made by a particular person through their various user personas or profiles on different sites - e.g. find all the blog posts and comments and forum threads I've created in the past year. In the SIOC and FOAF vocabularies, there are two properties linking people to user profiles: a Person is linked to a User using a "hasOnlineAccount" link, and a User is linked to a Person using an "account_of" relationship. Using a mf for sioc:account_of / foaf:hasOnlineAccount would help with the "One Person, Many User Accounts" issue - e.g. these links could be created from a user signature or other public profile field. For example, I have an account on boards.ie, and I want to say that I am the same person described by a FOAF profile on my own site, or that I hold another account on boards.jp. Maybe links are required in both directions to confirm that I am really am who I claim I am, but this can be done at least (even if it is tedious). This may also require some BBCodes for forums that translate to the appropriate HTML.

Example


<div class="User">
I am <a rel="account_of" href="http://johnbreslin.com/">John Breslin</a>, and I also have another account, <a rel="hasOnlineAccount" href="http://microformats.org/wiki/User:Cloud">Cloud on microformats.org</a>.
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Virtual Forums

Wouldn't it be nice if you could have a virtual forum of all your posts on blogs, forums, mailing lists, whatever? Apart from going around to all of your favourite sites and linking to your posts from a page, another option would be to do it in reverse - when you create your post, link back to your own post aggregation resource. From the user side, this could be achieved by creating a mf for sioc:has_container that allows linking to "Virtual Forums" from the post creator side, e.g. from the post content. Also, virtual forums could be created that list all the posts by people in a restricted social network, or constructed for posts / threads that refer to a certain resource or topic.

Example


<div class="Post">
Another post that is related to my love of <a rel="has_container" href="http://www.johnbreslin.com/forums/electronicmusic/">electronic music</a>, Tangerine Dream are releasing five previously unreleased albums next week...
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Unified Communities

This kind of corresponds to Eran's idea of "distributed social anything". In SIOC, we use has_part and part_of to link any object to a particular community. The concept of Community in SIOC is very generic - but the idea is that you should have a structured way to link different things (forums, people, etc.) to a community object. Let's say that there's a community talking about the TV series Lost, and they have a blog, a mailing list, an aggregation of Lost-related blogs, or just a news website - these could be linked to an identified central community resource through part_of / has_part relation. Similarly, I could identify myself or my user profile on a particular site as being part of that Lost community. From forums, a mf for has_part / part_of would allow one to link a forum or blog or any discussion channel to a larger community, e.g. this could be done from a forum description. Also, a mf for has_part / part_of would help to link a user to a community, e.g. by creating a typed link from a user signature.

Example


<div class="Forum">
Welcome to the <a href="http://sioc-project.org/forum/">SIOC forums</a>, where we talk about the <a rel="part_of" href="http://www.semanticweb.org/">Semantic Web</a> and internet discussions.
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Distributed Conversations

Ryan and Eran have already done a lot towards this idea with the cite-rel draft. In terms of SIOC, we already have the has_reply and reply_of relationships, which match up to their proposals: rel-reply corresponds to sioc:has_reply, and rev-reply corresponds to sioc:reply_of. Using the mf cite-rel versions of has_reply / reply_of would allow these distributed threads to form, e.g. if used from the post content. cite-rel brings the reply idea a step further by introducing rel-forward and rev-forward (basically, has_reply and reply_of with quoted content). Ultimately, we need ways to say that a post is in agreement or disagreement with a previous post or even with specific parts of a previous post (see picture below). Also, we may need to describe other reply types that are needed, as with IBIS. (Note: rev-update and rel-update may correspond to sioc: previous_version and sioc:next_version respectively, and via may be compared with sioc:related_to.)

Example


<div class="Post">
As a follow up to my previous post about <a rel="reply_of" href="http://www.johnbreslin.com/blog/2006/09/07/creating-connections-between-discussion-clouds-with-sioc/">connecting discussion clouds</a>, I have realised that I need to say more about people and topics, especially as discussed <a rel="related_to" href="http://www.johnbreslin.com/blog/2005/11/11/iswc-2005-over-won-an-ipod-aligning-sioc-with-foaf-and-skos/">here</a>. Edit: I've since posted about how <a rel="has_reply" href="http://www.johnbreslin.com/blog/2006/09/27/sioc-foaf-skos/">FOAF and SKOS can be used to describe people and topics</a>.
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(Edit: Eran has replied to my original post - thanks!)