HOW TO BLOCK APP REQUESTS FROM SOMEONE ON FACEBOOK
Some of your friends may send annoying app requests.you may want to block app requests from that friend.This page will show you how to block app request from certain friends with the help of step by step images. Once you block app invites from someone, you’ll automatically ignore future app requests from that friend
http://www.how2v.com/how-to-block-app-requests-from-someone-on-facebook–.html
how2v 