Whether it is Positive or Negative as long as it maintains the rule of the site. ( Read the Rules if you wish )
If there is a member who you aren't particularly interested on their views or what they have to say in their post's, You as a member have the ability to put who you choose on your Friend or Foe list.
This is the Manage Friends Screen
This is the Manage FOES Screen
This is an example of what their posts will look like when you see them
You still have the ability to show their posts by clicking the ( Display this Post ) option , which will display all posts by this member and next time you log on their post will be hidden once again, so you as a member have the control once again as to whether or not , that members posts are displayed to you.