If you know Twitter, you may know about twibes. They are groups where twits (people who use Twitter) with similar interests join groups and can then see posts specifically about that interest. I have created a twibe called CleanOceans. I started it to gather a group of people who support clean oceans, beaches and their habitats. You can join my twibe here: http://www.twibes.com/group/CleanOceans
