3 followers and
136 questions for tag chat.
The tag itself is very broad and seems to be useless.
Thus, let's get rid of it.
We have an instant-messaging tag that has this wiki summary:
Real-time chat software, services, and protocols such as ICQ, Yahoo Messenger, and MSN Messenger.
To me, that is similarly meta. However, I happen to think it's useful to have a way to identify this function.
Chat / instant messaging is often an add-on feature of various applications that not everyone uses or is familiar with. Identifying that the question is about this aspect helps to attract the right people to answer, and saves time for people who would be attracted to the application but have nothing to contribute on chatting.
There are also a number of questions where people are asking how to accomplish the function of chatting under specific conditions. There needs to be a way to identify that function in a tag.
I disagree that all uses of a chat-related tag should simply disappear. Some alternatives: