Welcome eferguson. You can be as specific or vague as you like in your identity, although it is helpful to know your general region. I'm not enamored with my postal city (I live in the outlying rural area) so tempered it with my region - the Pacific NW. Others simply state their home state or country. Likewise, some folks only state their first name, or first/last, or just stick to their screen name. Whatever you are comfortable with.
