As you can see, it was a pretty massive undertaking, so I want to be sure to give credit where credit is due: Many thanks to sand_woman, paraxeni, and h0rsegurrrl for researching and writing answers to some of the questions. Also to thisandthat for researching and answering the rest of the questions and for compiling everything into one ginormous entry. This wiki wouldn't exist without y'all! :)
Finally, there is a feedback post over in contact_vp if you'd like to discuss any portion of the IUD entry.
** By "FAQ," I mean that generally, these are questions that people often ask about IUDs. I do not mean that we will begin deleting individual posts about IUDs from the community main page; we won't.