Facebook Question- am I blocked from viewing this person?

Usually on Facebook if someone’s profile is private and you are not friends with them, then you can still click on their name (it will be a blue link) and view their picture and maybe networks, etc. If someone’s name always appears in a black unclickable link when I view their posts on mutual friend’s walls from my profile, does that mean they have me specifically blocked or that their privacy settings don’t allow anyone to try to add them as a friend by clicking their name? I know they have a regular profile… a mutual friend typed on their wall at my house the other day and I saw it, so just wondering!