Facebook is on online social networking community. Many of you probably already use Facebook to keep in touch with friends and family. Facebook also has the option to create groups. When you make updates to your group page people who have joined your group will be notified. A group can be used to let people know about upcoming events. Be sure to include the topic and when and where the event will occur. You can also use it as a forum for discussion before and after the event. And as a place to share science information before and after an event; some groups even post a summary of the event after it has happened. Also be sure to include other websites, or social media sites for your science café.
Interested in getting started, see resources online.