Twitter began to invite selected users to test the new analytics service, reports Mashable and publishes screenshots. What is most unpleasant for developers of similar third-party systems, Twitter Analytics will be free for all users.

The service will show the account owner, for example, the popularity of individual tweets (the number of views, clicks, retweets and responses), information about what messages people will unsubscribe from reading your feed, and more.
The following screenshot shows the filtering and analysis system for tweets.
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The appearance of such a product has long been expected, and Twitter representatives
promised to release it before the end of 2010.