Bekir,

You can use OxWall to create the a la Facebook interface and at the same time and from within the Admin you can tell OxWall to allow guests to view content at your discretion.

Since what you are describing is a "social network site", in my humble opinion I would lean towards a site such as Oxwall that will allow for end user interaction and contribution. A static site can be great for Ecommerce and other situations where you simply desire to make information available on the web but static sites are not as effective for web-community building.

thank you for your feedback.

I am now one step further in my thoughts.

yes i agree for the most part Abbey, the issue comes if you decide to do a more adult oriented site, having everything in the front store window can lead to legal issues as well as just hassles from moral groups.  So for those yes i agree put it behind a login.