A BBS Blacklist is used to deter attempts to fraudulently gain BBS tokens from the engagement mining by faking user activity. To start mining tokens, a BBS has to maintain the number of daily impressions by registered users above a (X) threshold for (Y) days.

The X and Y values are set via the BBS governance voting process to make sure that eligible BBSes can be realistically reviewed by the community prior to receiving BBS tokens.

Through the governance system, BBSes can be added or removed from the blacklist. Blacklisted BBSes are ignored in the daily token allocation process.

This mechanic incentivizes existing BBS owners to review, detect and report any fraudulent activity sooner rather than later in order to prevent the fraudsters from taking any share from their daily token distribution.