If you put that person on your blocked users list, you won't see them in searches or on your front page ticker and they won't see you either.
Also remember to go into your settings there and make sure you check the option to have your profile only searchable by members. If you don't make sure that is checked, it's public and shows up in search engines.
The world opens up... when you do.
Oh, oh, can't you see? Love is the drug for me. ~Bryan Ferry
"Love is that condition in which another person's happiness is essential to your own." ~Robert Heinlein