Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
AISmooth will instruct approaching AI planes to perform holding patterns if they are following the plane in front too closely.
In addition, AISmooth will check the distance and headings of AI planes in the vicinity of the user plane. If AI planes come too close to the user plane, are heading in the same general direction and are within an altitude range that suggests both planes are established on an approach path, those AI planes will be instructed to perform holding patterns as well.