This IS a heavy topic today! Ethics is something that everyone should hold dear. It goes against yur reputation and people don't forget about that kind of thing too easily. If you use something that you even think may come from somewhere else, try to figure it out and give credit where its due. One thing I do, is steer clear of other reviews for books until I've written my own. Once I have my own written and ready to be posted, I can then read what other's think about it. Until then, I just talk to other bloggers that I know are currently reading it and ask what they think of it so far. That way, there is no room for plagiarism or any kind of miscommunication.
Me personally, I've never had a run in with plagiarism. And I hope I never do. As a blogger, you must remember that you are reviewing these books because you want to give your opinion on them. If you are giving someone else's thoughts and words, that doesn't count as your opinion. It counts as theirs, and that's one less review that the author has. Just remember to be honest and to take everyone's feelings into consideration. Everyone who writes their reviews work long and hard on them, so taking those words away from them just isn't fair. As my mom used to tell me, "if you can't find the words you want to use, say it a different way."
What do you think about ethics? How do you avoid miscommunication?
I don't read too much non fiction anymore, but I do dabble in it from time to time. I read things that scare me (in other words, things I shouldn't) like true crime novels. Call me morbid, but I really love the stories about the unsolved mysteries like The Black Dahlia. I also like biographies of musicians. (I'm still looking for one on Janis Joplin if anyone has a good one....)
If I was to help someone pick out their first non fiction book, I would make sure they were really interested in it. Don't pick out a non-fiction book that you will only be merely interested in. You will never finish it.
Do you read non-fiction? What topics do you read?