After banging heads with Shack again today, Rob posted that he'd be looking into the ignore feature here.
I personally think that is a good idea.
Posting here should be an enjoyable diversion for people... if the posting of an individual hampers to you to the point it's not enjoyable... go ahead and use the feature.
What I will say though is, if you have someone on ignore, leave them, and their posts out of your posts.
To use, find your name / profile in the Upper right-hand corner and go to Manage Ignore Preferences.