If you don't want to see a specific member's post/threads/PMs you can have their content automatically hidden. To use the ignore feature you need to:
1. Click on the user's name or avatar:
2. Click the Ignore button:
To stop ignoring a user follow the same instructions and click the "Unignore" button.
NOTE: You cannot ignore forum staff. (You might notice that I am not on that list...interpret that as you like. Just know that ignoring me might result in missing important PMs/posts/threads. Up to you diba.)