I first did a search in Google using “semantics web” and the string “discussion and debate and blog” I skimmed the articles below.
http://www.mja.com.au/public/issues/187_03_060807/mcl10181_fm.html
http://bookbook.com.au/2007/08/
http://net11.web-ready.com.au/?cat=13
http://www.zdnet.com.au/news/software/soa/Future-Web-talk-caught-up-in-semantics/0,130061733,339286737,00.htm?feed=pt_data
I then skimmed the articles that were linked in the +5 blog. It is a fascinating case of swings and round abouts. The success of the web in terms of the volume of material published and the beauty that anyone can publish anything has brought people back to the situation that cataloguers are familiar with, it you want people to retrieve accurately then utilising controlled vocabulary helps enormously. The circle is complete!