They may simply choose never to return to a place where they feel their life boundaries are being invaded, or they may make a half-hearted decision. Slapping a sticker on a guest's lapel can be a crushing blow if they don't want to be known. After all, it may be that their marriage has just collapsed, they're still hung over from the evening before, or they are extremely shy because they have so much shame and guilt built up inside them. I recommend simply greeting visitors in a general way from the pulpit and making a clear statement that lets them know we respect their boundaries. I have begun to see that the methodologies I used as an evangelist in the seventies can be deadly to people in the dawn of the twenty-first century.
People today are much more wounded.
Pressing folks for a quick conversion may have been a viable strategy in 1972, but it doesn't work anymore. It takes a great deal more gentleness to help people today. Healing cannot occur in an environment that is pushy and disrespectful. And it certainly cannot occur if we view newcomers as so many more checks on our spiritual scorecards. We must relax a bit and gently help folks move, one step at a time, along the road to spiritual maturity.