Give your users the right to block unwanted users.

Blocked users will not be able to;

a) view the profile of the blocker

b) send messages to blocker

Its simple, just install and publish the plugin. Requires JomSocial 1.6x.

Live demo:

Go to  http://trythisweb.com/test3jf/

and login as user01 with password  user01

and then browse

http://trythisweb.com/test3jf/index.php?option=com_community&view=profile&userid=79&Itemid=2

Price £29.99 Special offer £19.99 ........................... Buy Now