Speaking about metadialog occurring! http://silenceandvoice.com/archives/2008/06/02/malcolm-gladwell-in-astd-general-session-keynote/#comment-732 .

Wikis and blogs may be the primary fodder of educational technology, but they are still somewhat limited in corporate and other large organizations. Yes, there are large exceptions (such as IBM), and I think I have a sense why (completely non-formally evidence-based).

Knowledge management is a challenge because I believe, people do not want to share all their tacit knowledge and (seemingly) make themselves unnecessary in their roles, as they no longer hoard their information and use it as a leverage (power) tool.

Blogs and wikis in turn offer knowledge sharing (and thus knowledge management), and thus comes with all the power and leverage issues that lead to internal political challenges.