Reading over this debate I came to realize that RSS is too limited to
mediate against the weaknesses and failures of social search:

http://atomiq.org/archives/2005/04/market_populism_in_the_folksonomies_debate.html
http://www.rebeccablood.net/archive/2005/01.html#11technorati
http://tagsonomy.com/index.php/semi-structured-meta-data-has-a-posse-a-response-to-gene-smith/


I have the sense that at least one goal of all this social search and
tagging is to recreate what Amazon.com does for its products, where it
mentions "People who bought this product also liked these items:". But
with social search and tagging, I think the idea is to recreate what
Amazon is doing in a way that is open and distributed. People have, so
far, mostly been using the CATEGORY tag in RSS to indicates tags, but
some feedback mechanism would be useful, perhaps a central directory
service that could be pinged to register approval (perhaps the CLOUD
tag could be used this way?).

My first impulse was to start adding tags to RSS, my second impulse was
to scrap RSS and make my own XML standard for personal use
(www.autostratus.com) but my third impulse was the realization that
other people must have realized all this a year ago or so. So there
must be other XML schemes out there, gaining acceptance right now, that
offer developers a richer vocabulary for describing the stuff on the
web.

Can someone point me towards whatever XML vocabularies they think might
facilliatate social search and tagging better than RSS?

Many thanks in advance.