[stefanhendriks]

yes. I also used some sort of 'been there' value. So, whenever a bot touches a waypoint, it was marked visited (got a score). So the more it got a score, the less it would be choosen to visit (read-> the path will be the next time a bit different). Resulting, hopefully, when a lot of bots visited one particular route various times, another alternative route was choosen. yet, this did not always work out well.