Web Address scope rules can be used to create search scopes that include content in web sites, the shares, exchange public ...

Web Address scope rules can be used to create search scopes that include content in web sites, the shares, exchange public folders, or any other content in the search index that has a URL.

Folder rules will include items in the folder and subfolders of the indicated path.

Domain or hostname rules include all items within the specified domain or hostname.