Advantages of Registering
- Other users don't have to refer to you as "good ol' 188.8.131.52".
- You get your very own personal user page, where you can put just about anything you want, including, for example, a description of yourself, what lineages you are researching, etc.
- Third, it makes communication with others easier. People leave each other messages under the "discussion tab" of their user page. It is, by the way, considered impolite to edit someone elses user page except under the discussion tab.