Regarding Fluther, I think if people pose a question in such a way as to already have inserted their personal opinion into the way it’s asked, via how it’s worded.
In real life, anything that has people strongly divided with their opinions, such as religion or politics. I usually avoid adding my opinions in real life conversations, as I don’t think it’s worth it arguing with people, especially when I’m not likely to change their opinions and they’re not likely to change mine. I was at a dinner table about 9 months ago – some friends who are staunchly Republican. They started poo-poohing climate change, saying how global warming is a myth, Al Gore’s family owns nickel mines, etc. (I googled later and found it to be untrue). I didn’t say a word. Not worth ruining a nice time with an argument, and as I said, they’re not changing my mind and I’m not changing theirs. Even if I were to pull out my phone and start googling right there, is it worth it?
Same with religion. When someone says their opinion of God (in real life), I just say some nice things like how that’s an interesting viewpoint, because, let’s face it, other opinions are interesting and valued, at least they’re valued by me. I’m interested in hearing others’ thoughts on the topic, but not interested in trying to convince anybody of anything or arguing about it.