When filtering profiles based on the number of Twitter interactions, retweets, and Facebook posts liked, those who don't have a Twitter or Facebook account get listed. For example, when going to Filter > Number of retweets > [Select "exists" from drop-down] > [Select "yes"], profiles without a Twitter account will still get listed. Also, there will be some profiles with a Twitter account when they actually didn't retweet anything.
Thanks Janice! This is something that we can look into - if this is messing with your workflow please let us know below!