This tutorial will let you to block some user in facebook whom you dont like.
Step 1 : Go to facebook.com.
Step 2 : Navigate through Account -> Privacy Settings.Account option is in top right of facebook .
Step 3 :Click the “Edit your lists” link which is under “Block Lists” at the bottom of the page.
Step 4: Enter the username and mail-id of the user .(whom you are going to block).
Related posts:
How to backup database using PhpMyAdmin
How to create facebook application using PHP and graph api
[How to] Copy data from one cloud storage to another
How to build RSS feed reader app using PHP and Jquery
How to: Create Collage Style Cover Photo for Facebook timeline
Right Click and Send Files to Cloud storage like Dropbox, Skydrive