I am also not interested in having a chat system in ISC. We always have the Forum section to share our views, to communicate with others and the editors. We also have personal messaging systems. In addition to these, I do not actually see the need for a chat system. Be it the forum or personal message, it is seen to everyone but if there is a chat system, it will be just one to one conversation which no one else can see. I do not think such a system is required in a platform like ISC. Everything is so open here and I feel that is the beauty of it.
"Do not give up, things might not favour you always"