I have found for myself at times, and also for many others I have talked, a desire to find the "Silver Bullet" of attractional evangelism. That is to say, the one thing that we can do as a church to reach more people for Christ. The one secret. The one golden nugget that can be applied.
As I have learned, though I sometimes forget, there is no silver bullet method that can be applied that works all the time in every situation. Contexts are different. Our mission fields are different. What works one place will not work somewhere else. Even within our own mission fields, what works one year may not work the next.
That being said it is important to try a variety of methods for attractional evangelism to determine which one is most fruitful. Try newspaper ads, radio ads, mass mailings, new neighbor mailings, ads at the movie theater, cable tv ads. Do as much as you can afford to do. The sooner you figure out what seems to bear the most fruit the more effective you will be in using attractional methods of evangelism and the more money you will save. The key is to try as many different things as possible.
You might do this as part of your launch if you are beginning a new church. Thi is typically when you have the most resources to try different methods. As you launch and thereafter track how people came to the church using a comunication card or a tear off in the worship program or whatever way your church uses. Narrow the field of methods to those that worked best and then pour into them remembering to evaluate them from time to time.