dede...... I pulled this off the Google privacy page.....
Personal information
You need a Google Account to create a group or post comments in the Google Groups service. Google asks for some personal information when you create a Google Account, including your email address and a password, which is used to protect your account from unauthorized access. A Google Account allows you to access many of our services that require registration. You may search for and read comments in public groups without registering for an account.
The contents of the postings, custom pages and files, including any text, images, photos, videos, and audio, that you submit to Google Groups are stored and maintained on Google servers in order to publish these items and provide the service.
Your submitted content will be associated with your profile, if you have completed one, or a "masked" version of your email address, if you have not. We mask your email in an effort to protect users from email harvesting software and bots. Please note that Google cannot mask any content, including email addresses, that are actually on your custom pages. If you have a Google Account and are a Groups member, you can create a public profile that includes certain personal information, including your name, geographical location, email address and other user information and content. When users view your profile, they will see your profile information as well as links to posts, custom pages, and files that would normally be accessible to them.
If you do not create a profile, only a "masked" version of your Google Account email address will show with your submitted content. Google collects and maintains information about your account activity, including the groups that you join or manage, lists of other members or invitees in the groups, messages or topics you track, custom pages you create or edit, ratings you make, and your preferred settings when using Google Groups.
You may update, change, or disable your user profile at any time by going to your profile page. Hope this helps ,
dl65