metal is stronger than wood... angle iron, which is what most metal stands are made of, is very strong. I have a 29g on a metal stand... never even crossed my mind that it wouldn't be strong enough. I guess working with metal a lot in school gave me confidence in it.
"What, exactly, is the internet? Basically it is a global network exchanging digitized data in such a way that any computer, anywhere, that is equipped with a device called a 'modem', can make a noise like a duck choking on a kazoo." - Dave Barry