We build tailored audiences based on individuals tweeting about a specific topic. We have experienced many times where when that tailored audience is pushed through the ads API or uploaded as a CSV where there is a significant drop off in this list. This is when we are uploading audiences with a week of these people being active on Twitter. We collected a list of 16,718 users who tweeted on 12/14. We pushed this list on 12/22/16 and it only showed 12,500 active users. Why was there a drop if these people were active the previous week?
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