Why is it I can hide my FaceBook Status …

Why is it I can hide my FaceBook Status Updates from certain ‘friends’. I can hide comments friends make on my wall from other ‘friends’. But I can’t hide comments I make on my friends posts from my co-workers.
I know facebook is probably saying, but if your friends and co-workers are friends than that wouldn’t work, but my friends and co-works would NEVER be friends!

this is the test post that doesn’t end

this is the test post that doesn’t end, it just goes on and on my friend, someone started typing it not knowing what it was and we’ll continue typing it forever just because….

this is the test post that doesn’t end, it just goes on and on my friend, someone started typing it not knowing what it was and we’ll continue typing it forever just because…. this is the test post that doesn’t end, it just goes on and on my friend, someone started typing it not knowing what it was and we’ll continue typing it forever just because…. this is the test post that doesn’t end, it just goes on and on my friend, someone started typing it not knowing what it was and we’ll continue typing it forever just because…. this is the test post that doesn’t end, it just goes on and on my friend, someone started typing it not knowing what it was and we’ll continue typing it forever just because…. this is the test post that doesn’t end, it just goes on and on my friend, someone started typing it not knowing what it was and we’ll continue typing it forever just because….