Well, yes, for you...but you still have the option open for people to post their comments (therefore linking to your post) to their Facebook and Twitter. That's the point of the CSS code.

So, in the example above, if you had an f-lock post and I replied, I could send the link to everyone in my Facebook. Everyone would be able to see my comment, your post title, and your username. (So, for example, if I said, "Oh, Sally, you're J/T artwork is so good!" Then everyone on my FB would know that Jeyla4ever is "Sally" and that you make J/T artwork and anyone on my FB could link my link in their FB.)