Live Free Fun is just that, FREE. It's the only cam site in the bunch that allows users to join and start chatting with only a valid email address. With a free account you can chat with the models as well as add favorites, send and receive emails, and browse without being asked to join.
That being said I would recommend upgrading to a Premium account (the free is called Basic). You have all the same features but with a Premium because they have a credit card on file you are actually able to go into private chat, group chat and gold shows. Those shows are where the real action is. You can see plenty of breasts with a Basic account but really won't see much below the waist unless you have upgraded. It's a decent experience either way as far as cam sites go but if you like things a bit more explicit I'd suggest the upgrade.