There are a few reasons why you might not see posts on this friends page:

• Gon Freecss might have no friends defined. If you are Gon Freecss, you can edit your InsaneJournal friends so they show up here.
• Gon Freecss might have friends defined, but all of their friend's posts might be over two weeks old (according to the times on our servers), and thus wouldn't be displayed here.
• Gon Freecss might have friends defined that post only protected entries that you can't view, because they haven't defined you as a friend in return.