If you haven't already signed up to get into Hyboria in the Age of Conan beta test, you might want to try before they slam the gates shut. They had over 50,000 wannabe barbarians sign up during the first 24 hours of the signup period, and a total of over 100,000 over easter weekend.
Apparently they made the signup process a bit difficult in order to "avoid gamers that were simply looking for a free trial of the game." So, if you're looking for a free trial of the game, just work a bit harder during signup. With this game winning "Best MMO of E3" from several different sources, it'll only get more and more popular. Unless the beta ends making gamers shout "By Crom!" in frustration.