Traffic information groups on Facebook are popular. However, members distribute accidents and traffic jams in text or photos. If waze were able to share a congestion, everyone would see a waze instead of text, photos, and the sharing could include exact positions. Last but not least, Waze would also have an advertisement if everyone saw Waze congestion pictures. (congestion > waze > share facebook > Waze pictures+gps position+map congestion)