Google Groups gets more features

Google Groups is a great way to find answers to problems that you think others may have come accross.  It is usually my first stop when trying to figure out why code I just wrote is causing my monitor to turn off instead of printing out an error message.  Just today, I was doing some research on Google Maps to find out if geocoding or routes were included in their API yet -- then I noticed something that never caught my attention before.  I think Google just released an update to Google Groups. 

The appearance of the service itself really hasn't changed a lot, but some additional features have been added. When you are browsing groups, you will notice a couple changes. Some topics now have stars beside the title so you can quickly identify which ones are helpful and which ones aren't.  This rating comes from the ability to evaluate posts at the bottom of each message by clicking the star you think is most appropriate.

Not just that, you can now see a "profile" for any user who has posted something in the past.  This profile will show you any information the user has voluntarily provided and the user's past activity -- similar to how search history works, but it shows which conversations you've participated in, and it's public.  I can see how some people are going to dislike this feature for privacy reasons, but this information was always available -- you just had to search for it.  What do you think of these new features?  Are you concerned with your privacy because of these new changes?