The Domain Name Service is the internet standard protocol used to translate host names to IP addresses. In most cases, your Internet Service Provider or the people who are providing the machine hosting your web pages will be familiar with the domain registration process and will be able to help you get registered. This is a courtesy to other users of the Internet. It is important to let prospective members know why the society exists. Many readers will be interested in learning about the origins of the society.
Many societies publish books, newsletters, magazines, journals, standards, or specifications.
It is in a society's best interests to provide readers with an online catalogue of its publications. Prospective members will want to know what they will gain by becoming members of the society. If your society is either a federation of societies or has some affiliated societies, it is important to let readers know which societies these are. You should list these societies, and provide links to web sites for any societies that have them. For example, see some of the listings of affiliated or member societies that the Scholarly Societies Projects knows of.