I bet on them sometimes, and I know some of the other members do as well (Lilred I'm looking at you!)

As for the naming question, as there have been thousands of racehorses, and restrictions on how they can be named, such as they cannot be named after a famous horse, and they can only be named after a famous person if they have that person's/that person's family's permission, and they cannot use a name that has already been used. That reduces the number of names available and forces horse owners to come up with some creative ones.