I saw many case to have problems about opinion for publish in social network.
And if you ever saw movie "The Social Network" is about biography of Mark Zuckerberg who created Facebook. At the first part of movie have a scene Mark is reject by woman and then he angry and post some information is not good about that woman on website that make that woman so embarrassing. After that Mark still guilty about that event until now.
You see,If use only emotion without thinking on your post in social networking, That can make some body suffer maybe even yourself.