When I saw Shelley's post come out about turning off the tagging activities at Brooklyn Museum, I half-jokingly tweeted about how in 20 years time my cohort will be sitting up near the front of a conference while some whippersnapper gives a history of the digital GLAMs and talks about the blip that was tagging.
I'm not even half-joking, to be honest. And I think tagging has long gone the way of comments; we just do not interact and share - or contribute - like this any more. In fact, one of the most interesting points in Shelley's post points to just that: "Tagging has shifted to a more social language, not a descriptive one. For as much as we want the keywords, the notion of tags as keywords has changed considerably."