Dust system is only applicable to Hive and not for tribes , it means that any post or comment which has less than 0.02$ rewards will be turned to dust that means you won't get that payout. So if my upvote is worth 0.01$ I usually vote post and not comments because of the fear that I will lose my curation rewards if others won't upvote the comment and push it above 0.02$.

Your data -

From 25th Feb to 4th March ( till 5 AM UTC ) - 2.26 is the total curation reward earned by @dagger212, You have got curation rewards by upvoting to 108 different posts/comments, 73 unique authors .

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