You can create your contact lists (address books) and group them into different Contact Groups. You can share files among a contact group or create Group Forums among the group members. Logon to your account, click on "contacts". The contacts list page will be displayed. When you register a new account on DriveHQ.com, the system automatically creates two default contact groups by default: Friends and Blocked. Then click on Create New Contact Group to create a new contact or select an existing group to edit.
If you select an existent group, the member list will be displayed, shown as bellow:
The blocked contact does not know he or she has been blocked. A person you have blocked still can share/publish/send email to you; however, you can't receive his email and access his share from DriveHQ Share folder tree.