I initially like to use ninjalitics to show prospects where we can improve together. (I look at ER and the frequency of posts)
this is quite a subjective thing. So difficult to quantify without a deeper look into his followers
Ditto as the real/false followers. Difficult to tell without deeper insight.
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As far as automatic reports.. i use @SheriffWoody’s service I made a free Instagram analytics tool for you guys (and myself)