Unique (within site) numeric id of the resource. Date and time when the resource was published on a site. A characteristic of a resource. In addition to standard focuses, each site can create its own focuses, representing different topics of interest. A kind of statement that can be voted upon by site members. Approvement rating of a proposition as voted by site members. Calculated from individual votes. Vote cast on approvement rating of a statement by a site member. When true, editing of this message is open for all members.