The SafeSurf label is used by some net-nanny softwares to block access to sites, which can be interesting if you're posting things in your LJ you don't want little kiddies to read.
Here's a tutorial for getting one and inserting it into your LJ. This tutorial is for paid users who use a S2 style only. People who use a S1 style can do it very easily (see this post). Free users with a S2 style can't do it.
( TutorialCollapse )You should be all set.
If there are problems (and there will be), comment here and I'll try to help you. Before commenting, make sure to do the following:
( If you need helpCollapse )