Hi we have a list for articles which may be implemented for each deparment (each department has own subsite). The articles list will be used for each department site and I would like to ensure that article created for each department will appear on the article list for that department's list only. Article's list and it's content is managed by the entity class generated by SPMetal. This entity class doesn't have list id so how do i ensure that articles different departments don't get mixed up.