I didn’t realize I was being “hysterical.” I would say “concerned.”
In any case, I’ll add two more things and then leave everyone alone to do some serious internet reading.
First, the tactics–I’m afraid it’s not like Christianity at all.
Hadith from Sahih Bukhari, vol. 2, book 24, #573:
Narrated Abu Mu’adh (the slave of Ibn Abbas): Allah’s Apostle said to Mu’adh when he sent him to Yemen, “You will go to the people of the Scripture. So, when you reach there, invite them to testify that none has the right to be worshipped but Allah, and that Muhammad is His Apostle. And if they obey you in that, tell them that Allah has enjoined on them five prayers in each day and night. And if they obey you in that, tell them that Allah has made it obligatory on them to pay the Zakat, which will be taken from the rich among them and given to the poor among the. If they obey you in that, then avoid taking the best of their possessions, and be afraid of the curse of an oppressed person because there is no screen between his invocation and Allah.”
In other words, tell the truth, but not the whole truth. Reveal Islam bit by bit. And even after people convert then you add more and more. This model from the early 7th c. is still the model used today. Go to any number of ex-Muslim web sites and read what they have to say. This is exactly what they complain about–that they were misled because they never got the whole story. It was bit by bit. And in fact there are imams who advocate actual lying to achieve conversion. See this video of an Egyptian imam on TV in 2009: youtube.com/watch?v=8-N5onnfEnQ
Second, earlier this year I attended a talk on Islam by a prominent imam (I won’t name him here, but he is nationally known). He was invited to give a talk on Islam to a Catholic parish in the name of ecumenicism, etc. etc. There were approximately 150 people (all potential converts to Islam…) in the audience. I took detailed notes throughout the hour and a half presentation. He brought up exactly 19 topics; some were fairly simple statements (a Muslim invented the concept of zero) and some were much more complex issues (Islam honors and respects women). Not once (!) did he make a statement that coincided with the truth. Whether he was simply ignorant of the truth or was deliberately lying I cannot say. Only he knows. However, the important thing is that his misstatements all made Islam look attractive and admirable. How could he expect to get away with that? Because the general public is ignorant about Islam. Why bother? Because he had 150 potential converts to convince. He did an excellent job.