Twitter Analytics for "Analytics": Juice Analytics
http://www.juiceanalytics.com/writing/twitter-analytics-analytics/

Excellent discussion on what is interesting in analytics.

Twitter’s wild popularity hasn’t obscured the fact that the service needs to eventually make money. The concept of “Twitter analytics” as a revenue stream has come up often enough to make my ears itch and my nose burn.

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Despite all the activity, I haven’t yet seen a solution that offers the kind of valuable analytics that a company could use to understand the Twitter conversation relevant to their business. The applications above are either focused on the measurement of individual Twitter users or offer a high-level tracking of words and phases in the general conversation. They treat tweets as transactions — How many? How valuable? Who’s listening? Who’s responding?