After careful consideration (and suddenly realizing while brushing my teeth this morning, that christianley was correct) I have decided to revise my reply, please disregard the previous one. Thanks +N
I was wrong when I said the author was not suggesting that we tell the LDS they were going to hell. In fact he does. This may sound crass to many and in most circumstances it is terrible form. However it goes back to the point that the LDS are truly a foreign culture, both religious and social. They have have been insulated from the culture of the rest of this country for so long and for various reasons that we won’t expound upon here, that while they may speak English there is greater possibility of confusion and offense taking. On both sides. So, curiously enough, while telling someone from our culture that they are going to hell, even in a calm and reasonable tone of voice is highly offensive, doing so to someone from the LDS, especially missionaries, is rarely offensive to them because they are taught from childhood that they are far, far superior to those outside their church. They take most of what we say with a grain of salt because we are ignorant of their “special knowledge.”
I will continue by reiterating those parts of my previous reply that I still stand by.
I am not necessarily advocating the author’s views on salvation or any other doctrine so much as his insight as to how to “become all all things to all men” when we encounter an LDS and have an opportunity to share with them our faith. They are a culture unto themselves with their own language and customs. The author knows this and knows the best way to reach out to them in the context of that culture. We as catholics do not have to espouse the author’s doctrine and theology but he has supplied us with a trove of principles and methods which we can adapt to our own doctrine and theology and then employ to reach some, and do it more effectively. That website is not meant for LDS seekers but rather for those who seek to be most effective when ministering to an LDS.
Following is a quote from that website:*
Instead of debating with Mormons about the nature of God, or about the relative truthfulness of the Bible and the Book of Mormon, or about the character of Joseph Smith, we need to emphasize Christ’s saving acts. We need to focus on their need for a Savior and how Jesus fully fills the need. Instead of trying to pull them out of Mormonism by stressing its negatives, we need to push Mormonism out of them by filling them up with the positives of Christianity.*
*
*I tend to agree with you on this, in fact I have been accused of Universalism because I extend that belief to the entire world. Have you ever read “The Last Battle” by C.S. Lewis? There is a good illustration of this in the final pages of that story. On the other hand, we must be careful that we do not become lax in evangelization. It is not our place to deny any man access to the catholic faith. Especially out of sloth.
No acccusation intended…except for at myself.

mea culpa, mea culpa, mea maxima culpa