Purchasing domains these days is definitely more than just having an online presence. It is in fact, no less than the real estate business. Just as a piece of land or a house you can purchase and sell IP numbers (domain names) online. Be the first one to guess the value of a domain name, register it and you will be sitting on a gold mine a few months/years later.
But nowadays, to purchase a domain you have to check not only at the domain registrars but also at various domain sellers and re-sellers (in case the domain of your choice has already been registered by someone else) - making the whole work a lot more tedious for you. But luckily, now PCNames is there to make the process simple and easy.