1. Do the Mormons have a holy land that God promised them?
Not particularly. We see Jackson County, Missouri, as sort of the place where a number of things will happen in the last days, and Utah is where the Church went after being driven from other areas, but basically we live wherever we are.
2. Are Mormons pissed about losing polygamy rights?
How could I be? One wife is hard enough . . .
Seriously, we believe that just as God commanded us to practice plural marriage, He also commanded us to end the practice.
3. Do Mormons believe the OT is incorrect in its telling of the history of non-Mormons, or is it simply about a different place and time to them?
We believe that the Bible is true as far as it is translated correctly (in other words, that in general it is correct but some parts have been changed or corrupted).
4. How do Mormons feel about Islam and Muhammed?
In general, Mormons get along with Muslims and Islam better than a lot of Christian churches do. We don't believe Muhammed to be a prophet the way Muslims do (or the way we believe, say, Joseph Smith to be a prophet) but many Mormons feel that he was in some way inspired by God. And the way I see it, every religion and ideology on earth has both good and bad members.
5. How easy is it to convert to Mormonism?
Well, it requires accepting everything we say as truth, which is hard for some people. The actual act of conversion that marks one as Mormon is done through baptism (we require anyone joining our church to be baptized, even if they were previously baptized in another Christian church) and confirmation (which is what officially makes someone a member according to our record keeping). And of course, one must make some lifestyle changes (giving up drinking, smoking, etc.)