Thabiti Anyabwile has an excellent blog called Pure Church. A former Muslim, he is active in bringing the gospel to Muslims. More than once he has participated in a debate in the Middle East where he gave the gospel with clarity and compassion. He has also written a book on witnessing to Muslims. Therefore I lend a respectful ear when he says that he want to weep and wail over some kinds of evangelism to Muslims. See this link for the post and make sure to watch the video.