In addition, HITN may give you the option to provide us with certain demographic information about yourself and to upload photographs or other personally identifiable information. Depending on the activity, some of the information we ask you to provide is mandatory and some is voluntary. If you do not provide the necessary information for a particularly activity requiring disclosure of such information, you will not be permitted to engage in that activity. Examples of activities in which we may collect personally identifiable information on the Site include but are not limited to: (1) registering for a user account, (2) requesting newsletters or other communications, (3) registering for online seminars, (4) entering contests or sweepstakes (5) purchasing merchandise, (6) submitting your User Content, as that term is defined in our Terms of Service, and (7) participating in surveys, chat rooms, games or bulletin boards.