Dave, some people were born as ass kissers and Batty washers so do not get upset, everyone is different, many here are Pea brains, some are naive and stupid. Do not let their shortcomings be your problem!!
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .