This work deals with mechanisms of knowledge. In the work the concept of the virtual site meets the physical one. The work examines two fundamentals of internet sites: the search and the site map. Both of these supposedly give one freedom and access to the information of the site. These basic concepts also mirror inner logic of sites: the ability to virtually 'travel' in the site and the constraint of information of the site. The work deals with knowledge accessibility, physical existence, memories erasure and suppression in a digital world. The Sheikh Baader site is a paradigm of a suppression mechanism, disappearance and nationalization of actual and virtual sites active now in Givat Ram.