Sally Morgenthaler, author of the book Worship Evangelism, has given up on the notion. In this article she despairs that her thoughtful book became an excuse for churches to develop an "if you build it they will come approach" to evangelism that has both failed in developing proper worship and truly effective authentic evangelism. Today, instead, she challenges leaders to separate worship from evangelism so that we can honor God in the first and live with and love our neighbors as the means to the second.
Read the whole thing at It Takes a Church.