Questions about facebook timeline - security concerns?

[Ed Fox]

If someone is blocked, they cannot see your profile - assuming you have had the common sense to make it visible only to friends.
It would seem you are not emotionally suited to social networking. The definition of social networking is the sharing of news/pictures/videos etc.with your friends. The timeline is simply a jazzed up way of doing this. There are no security issues, unless of course you have your profile totally open to the world