MBA1445 Q&A Wednesday: Do I need to also buy the .net and .co for my domain?

Every business needs a website, and therefore a good domain name. But do you need all the domains with that name? Good question. It’s Q&A Wednesday, and one listener wants to know if you should buy up the .com alternatives: the .co, the .net, even the international domains like .uk and .au. How many domains is too many?