[juni]

We don't have to worry, the privacy policy clearly states:

Information About You

Thoughts Media may from time to time ask you to provide information about yourself to us on a voluntary basis, through surveys, polls, and as a requirement for entry into Thoughts Media contests. This information may include your name, address, telephone number, Zip Code, e-mail address, sex, age range, the types of devices you use, planned purchases, and what kinds of features you prefer in a PDA.

Thoughts Media aggregates this information to determine trends, preferences, and demographics about the handheld community in general. We will use this aggregated information to study the trends of our user community. Occasionally we may provide this aggregate data to the sponsors of Thoughts Media. Specific information such as name, email address, or other contact information will never be shared with sponsors.

that means all the info gathered is being gathered voluntarily.