I can't figure out how to do this, and the question isn't answered.
closed as not a real question by Eight Days of Malaise, ChrisF♦ May 7 '12 at 10:44
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.
Hover mouse over friending activity to see the small 'x'. Click on it to view the options seen in the image. Now to hide a single activity choose the first option - Hide this recent activity story from Timeline - or to hide all friending activity hit the second option - Hide Similar Activity from Timeline.
If you simply want to hide the activity from your friends, while keeping it visible to yourself, do what the first comment instructed. Go to https://facebook.com/friends. Change friends privacy setting to "Only Me".