I was thinking it would be REALLY cool for users to have a secondary profile... I will explain what I mean by demonstrating my site.
My site is an equine (horse) community for young girls and they of course have their own little profile and stuff.. but it would be really cool if they had another option for something like "My Horses" where you could specify different fields such as breed, age, primary discipline, picture, etc. It would be cool if it could be displayed in a kind of list format with thumbnails for photos. And of course it would have to be able to support more than one horse... becase a lot of them own multiple horses.
This could go for a wide variety of things.. like someone who has a auto site.. people could have a separate tab for "My Cars" or someone who has a cooking site could have a tab for "My Recipes"
EXAMPLE (excuse my crappy editing skills... just to give an idea of what I mean)