At the Enterprise 2.0 conference in Sydney, David Hawking, Funnelback founder and Chief Scientist at CSIRO ICT Centre talked about how a web search system could add user generated tags automatically. This does not involve the user entering the tags, or even knowing they are doing it. Instead the search interface notes the words the user searches for and the documents they then select.
It would be interesting to see how well the Funnleback search system works on Web 2.0 content, rather than neat government reports and scientific research reports. Perhaps the search system could participate in discussions as an intelligent information source.
The conference ends today. I am on a discussion panel in the afternoon at the conference having given my presentation yesterday on "Enterprise 2.0 Providing Solutions to Wider Business Needs".