The aggregated credibility score is shown as a percentage and a total number of comments in the hovercard that appears when a user is moused over in the Social Commenting plugin. Through extensive testing, we’ve determined that the percentage is calculated using the formula (total Likes – total instances marked as unhelpful or spam) / total Likes. For instance, a commenter who has had their comments Liked seven times and been marked as unhelpful once would have the equation (7 – 1) /7, which equates to 85%. Scores are rounded down and are higher than the equation specifies when there are less than five Likes.
Users and admins will be able to look at this credibility score and deduce whether a certain comment is from a reputable source. Trolls and spammers will accrue a low score or have a low number of total comments, indicating their comments aren’t worth replying to, and their links shouldn’t be clicked.