Let's discuss Mormonism.

[Frodo]

Polygamy? Do you guys have any Biblical justifications or did Smith/Young have their own visions to justifiy it?

Both -if you read the Old Testament you will know that the ancient Hebrew patriarchs from Abraham to Jacob were polygamists (or at least bigamists). 

[Frodo]

Polygamy? Do you guys have any Biblical justifications or did Smith/Young have their own visions to justifiy it?

Both -if you read the Old Testament you will know that the ancient Hebrew patriarchs from Abraham to Jacob were polygamists (or at least bigamists). 

True, but why did Smith/Young accept it after monogamy became the norm?

That's a good question.  According to this PBS documentary (which I strongly encourage you all to watch if you haven't already), Joseph Smith supposedly received a vision during the Nauvoo, IL period that told him that polygamy was divinely sanctioned.  He later pressured his lieutenant Brigham Young into (reluctantly) accepting it as well. 

[Frodo]

PioneerProgress:

Do you consider the Church of Jesus Christ of Latter-Day Saints as being a Protestant sect, or as more of a stand-alone religion outside the known Protestant, Catholic, and Orthodox traditions within Christianity? 

[Frodo]

Where does the word, 'Mormon', come from?  I am asking with regard to its etymology. 

[Frodo]

I don't know if it has already been discussed in this thread, but what is Mormonism's stance on evolution, and science in general?