This is a serious question that might throw up some strange answers. I am looking for some filters to smoke out the false favourites. You know the ones that are overbet.

To me, if a horse or horses are overbet then their is a good possibility that others might be better value providing the information the crowd is going with is not really factual and it is just the mob mentality taking over.

What are some of the reason a false favourite is born. If we can isolate a few of the reasons maybe that might just give us another angle to look at.