I've seen a few places people mistaking Fe for such things as following the rules, copying, or being a sheep, or perhaps not having your own opinions. Other people have spoken about continuing to play by the rules your family set or being respectful or interested in social hierarchy.
I'm not sure any of this is actually true. It may be true of some Fe types, depending on what other functions they are using, but I don't think it describes Fe itself.
One good way of looking at Fe, I find, is what you will do when someone tells you a bad joke. I personally find it very rude if a person tells a joke and not everybody in the group laughs, regardless of whether or not it was funny.
When someone tells a joke then, to me, it is not necessary to consider whether or not the joke was funny - this is completely besides the point. Rather, a person tells a joke for a reason. Maybe they want to make you laugh, maybe they want to feel good about themselves etc. Therefore, the content is not important, only the intention. So I automatically laugh when a person jokes - without any conscious decision - because it's a joke. Therefore, I get offended if other people do not laugh at the joke someone tells, because I think it is very rude to be ungrateful of someone attempting to make you laugh. I will also be irritated at the person for making the situation awkward. The other reason I might laugh, even if the joke teller is an arsehole, is to help the conversation run smoothly - and I think this is another important part of Fe. I think a large part of Fe is facilitating conversation, regardless of your feelings about the other person, whether or not you like them (and Fe is not naive and trusting of everyone, I don't think). This is simply so that the experience is pleasant for both people. Fe will not feel it is selling out by giving this courtesy to someone they do not personally like. Or that is my experience.
The only other very Fe thing I can think of, that I have read about a lot of other people doing, is watching the face of the person I'm talking to to see how the conversation is going. If they seem bored or offended or something, I will change direction and approach them in a different way. This, again, is to help conversation run smoothly.
What Fe is not is following the rules. It does not necessarily think this is important, although some types that use Fe might. Si+Fe may be more likely to do this because they may be more interested in tradition and keeping things as they always have been - they have a more homely character - but Fe itself does not concern itself with rules.
That's my two cents anyway! Feel free to disagree and I may change my position, but this is just to clear up any misconceptions about Fe.