Since I live in Florida, I always thought it would be great if I could go to the Florida Gardening Forum and see lists that people posted of the plants that grow well for them, showing details of location in the yard/garden (full sun, only morning sun etc.) irrigation, soil type ... but that would require sub-pages because there are three different growing zones in Florida (South, Central and North) which are all extremely different growing situations.
~ Maybe we need a space on our profile page where we can list plants that grow well for us and give details. We could search the memberlist to find those who live in our area, click on their username and see if they perhaps have a list.