In my opinion the most important thing about embracing blogging and podcasting, etc. is not the technology itself, it is the mindset that empowers the technology. The whole point of these emerging technology (emerging pedagogy) tools is that they enable global collaboration and conversation. This is a conversation that transcends boundaries and institutional lines. Within the blogosphere/podosphere all voices (like all IP addresses) are equal. There is a thesis in a great book on the subject called the Cluetrain Manifesto, "Hyperlinks subvert hierarchy." Of course this requires institutional buy in. I believe it is more important to have institutional leadership that "gets it" than it is to have a blog server solution. Without this kind of mindset I would never trust an on-site solution to host a blog of mine.
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