Guess who wrote this:
Because it was unclear how to harness Wittgenstein's insight, it was hard to view Wittgenstein's later work as leading to a coherent view of the general structure of language. As a result much of the work he inspired led to a dead end. Nevertheless, the basic idea is right: meaning is use; what is needed is to take this in, and apply it to the right use.
It's not Brandom.
(Incidentally, this is the 100th post on this blog.)