Every member can create a group to focus on a specific topic or set of pictures. It can be pets, people, flowers, cars, etc. However there are some guidelines to keep in mind.
1. Make sure you fill out a group description to let other members know what the focus of your group is.
2. Make sure that your group is moderated. If it grows to the point that you need help, you can appoint other group members as admins to help.
3. Videos cannot be posted in groups. You may post the link to a video in a group or just post it as a plug in.
4. Respect your host's house. If you join a group, please follow the group guidelines as established by the group creator.
So create/join a group and have fun!