Social Report's Twitter Key Metrics offers quick insights into how well your Twitter profiles (one or more) are performing.
1) Overall trends: followers, following, tweeting, mentions, retweets, etc
2) Overall activity across twitter profiles you are tracking
3) Activity and Engagement distribution + some interesting facts.
4) Your Tweet reach as compared to your followers. Days when you reach more people then you follow.
5) Top languages spoken and timezones of your followers
6) Topics of discussion and followers gender.
7) World distribution of your followers.
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