Also the ones that say that goldfish do not live long or they grow to fit the tank. Got one here that will tell you if you keep an alligator in a small tank and feed it little, it will stay small and you can keep it in a 30 gallon tank. These are the same people that sell you undertank heaters for tree frogs and UVB lightbulbs for nocturnal animals. Don't forget the ones that tell you feeding live rats is best because it is what they will do in nature and feeding them live food makes them feel like they are still in the wild. Along with the ones that tell you that pacman frogs can be kept in a critter keeper.
As genivive knows from my posts at the frog forum, I have a place that will tell you DO NOT TAKE YOUR ANIMAL TO THE VET, if it is sick then you have your tank setup wrong. If the animal has worms, it is because your setup is wrong, if you animal has cancer, it is because of your setup, if your animal breaks a bone or gets hurt it is your setup and on and on they will go.