Today I was invited to join Google + by an associate I was acquainted with via my forum. The registration form I was redirected too was incredibly simple, requiring only a first and last name, gender, birthday (m/d/y), and your preexisting Google image (if you have a Google account) is pre-added.
After you fill out this information, you also have a check box to consider (Google may use my information to personalize content and ads on non-Google web sites) and a notice by Google:
Google+ is in limited Field Trial.Things may not always work as intended. By using this product in Field Trial stage, you’re responsible for protecting yourself and your data from any risks, including data loss or disclosure. By signing up, you also agree that we may contact you to ask for feedback about the product.