New Update: A definitive list of social media measurement and monitoring tools

It's been over ten months since I originally published my list of over 80 social media measurement and monitoring tools, and I continue to get a lot of updates. Many thanks to everyone for the corrections and additions.

This is my second round of edits and changes. This time, I've seen a handful of companies disappear (Intelligent Technologies, Kaleidico, Net Equity and Scanblog among them), as well as a few changes in business model or products offered. I've made updates to about half the listed, including Meltwater, Dow Jones, Appinions, Lithium, and Millard Brown.

You can find the complete and updated list here.

 I remain confused by the different capabilities and use-cases these products support -- am I alone?

Please let me know any omissions or errors.