Back in January, I left a comment on Forrester analyst Charlene Li's blog. She was doing some research about corporate blogging platforms. I mention this because Forrester kindly sent me a copy of the resulting Forrester Wave report on corporate blogging platforms:
Forrester conducted in-depth evaluations of nine blogging platforms: Drupal, iUpload's Customer Conversation System, Roller, Six Apart's Movable Type and TypePad, Telligent Systems' Community Server, Traction Software's TeamPage, UserLand Software's Manila, and WordPress.
The results (which, sadly, will cost you a couple of grand) are illuminating.