I was concerned with it as well, which is why I made sure to cite the guide when I created my answers. The biggest problem that I have with saying "Should we allow information from the guide to be available on our site" is this: What is stopping someone from finding the information from another source, be it Gamefaqs, Gamefront, PS3Trophies, or Joe Schmoe's random blog post and re-posting it here? In fact this has been done numerous times on this site for many different games. If we are going to have a problem with taking information from a game guide and re-posting it here, I think we should make that stance about taking information from another website or blog.
Taking pictures or scanning pages from a game guide, is in my opinion, a very, very bad idea (And is illegal without a doubt unless what you are taking pictures of is public domain).
As far as the answers that I posted that were linked by bwarner, I knew most of what I posted. I will admit that I didn't know them all. I could have loaded up the game to try and figure out what I was missing. I could have gone to Google, done some searches, and found the missing information. I chose to use the information from the guide, cite my source, and give the viewers a link to purchase the guide.
Regardless of the outcome of this discussion, I have changed my answers to what I knew without the guide and found the missing elements via the game or another website. I still stand with what I have said above and in comments. That is my opinion, and for now at least, I am sticking to it.