Andromeda Yelton, in her ... blog, talks about these topics. In chronological order, she starts with "The structure of ALA seems to me like a controlled vocabulary." In that post, she admits that she understands the strength and power of controlled vocabulary, but in moving the analogy to ALA she shows some insight:
I see people (including, but not only, Gen Xers) talking about the disconnect between ALA and younger librarians, they’re talking about the divide between a slow vetting process and a system that’s nimble, fast, long-tail-friendly, decentralized — chaotic, uncertain, unpredictable, emergent.She ends with a great question:
You want to know what I spend a lot of time thinking about these days, it’s this: how do you cultivate the metaphoric parallels of tagging in a controlled-vocabulary world? How do you get there from here?A day later she talks more about the fallacies of tagging (i.e. discovery) and less about ALA.
And finally, she gives her answers to some of the questions Andy Woodworth raises about ALA.