Some points on privacy here - sounds like that is a concern for you. This board is searchable by Google. So decide on a user name that others are unlikely to recognize and be cautious about very mentioning specific personal details. You can put as little or as much personal information as you want in your profile. Finally private messages (PM) are available on the forum and are not searchable by Google.
That said, I hope you find the forum helpful and interesting! I certainly have.