You can manage your Portal Profile Privacy by going to your name on the main Portal menu, then clicking Privacy Settings. Here is where you will have the possibility to enable or disable the following:

Profile Active - Allows all members to search and view your profile.

Receive Shout Outs - Email notification each time a member in your network (whom you follow) posts a new shout out.

Receive Status Updates - Email notification each time a member in your network (whom you follow) posts a new status update.