There would not be a listing of groups for the general public. Groups are created by the end user for their circle of family and friends. I currently have 2 groups - a weekend getaway group and a recipe exchange group. The former is active, the latter I need to do more work on but will be active soon.
Save the trip to the store to look at Leopard and
click here to watch the demo. This will tell you all you need to know.
Pam, I also use my .mac space for storage. I have over 10,000 pictures that were sucking my hard drive space up so keeping them on-line is safe and frees up my mac.