Blogs

Blogger - How to use Blogger (thanks to Marcus McGowan)
Typepad
Wordpress
Edublogs - How to Edublog video (thanks to Mike Temple)

Wikis

Wikispaces - How to Use Wikispaces
Pbwiki - How to Use Pbwiki
Wikidot
Wetpaint
Wikibooks

Podcasts

Podomatic - How to start with Podomatic (thanks to Suzie Vesper)
Gcast
Odeo

http://mbsstaffict.blogspot.com/ -ICTPD Mellons Bay School