Facebook recently introduced timeline view for the user profiles, This view is helpful , you can traverse through the status updates along with the time line , for your profile of any of your friends profile , If they have enabled timeline view
When your Facebook log in session is active, If you visit any webpage and like the page , It immediately appears in your timeline view. This activity can be viewed by all of your friends, You can hide this by clicking on the edit icon on the top right corner of the update frame.
Lets say, you want to un hide this , Searching for the same is not simple, to un hide simply click on activity log button
And scroll down to the activity , Click on the circle that appears next to the activity details
and click on “Allowed on Timeline“