Gossip take up to 2/3 of converastion time. It's suggested role is to defend aggainst free riders<ref>[http://attach.matita.net/ziorufus/Dunbar%20gossip.pdf Dunbar, R. I. (2004). Gossip in evolutionary perspective. Review of general psychology, 8, 100-110.]</ref> (parazite), or basicly against ungusticeingustice