Alan Levine has a hypothesis on tagging here.
I’d be curious sometime to look more at the amount of tagging that really goes on. I am convinced it is from a relatively small number of individuals (but bless them for being tag-nostic) ... I’m not comparing the tagging rate per conference, but realizing that… very few people tag. You have to be rather anal or committed or a folksonomy addict or … I am not convinced that tagging is anywhere close to a tipping point.
I might be tempted to agree with him. However, it makes me think of the concept of newsmastering and whether nor not it should be expanded to tagging.
Alan, this is also an experiment in silo busting ...