Is street evangelism effective?

I like to do street evangelism & street preaching. However this is not a popular or practiced method in my church. Having done street evangelism since 2008 I can say that its not exactly the most effective method. I do not think results are up to me, as they are up to God. But then again living in the Bible Belt where there is a church on every corner, I wonder if its possible that many of my gospel tracts, gospel of John’s, books, and such that I have given out to so many have been wasted and such resources may be better off in another context. My church has something called Coffee and cars which is a more of a friendship/relationship evangelism event. I will be attending and helping out today. My church I think uses the tools and tips used in the book Share Jesus without Fear which I read once, but forgot because I have been far bigger at promoting the techniques of other evangelist methodology. What do you say about all this? Is Share Jesus without fear a friendship evangelist approach?

Thanks,

John