Q: I have a Facebook friend who constantly spams me with invitations for games. Can I discreetly block all these invitations?
A: Facebook includes tools to let you ignore invitations from friends who ask you to join them in apps and games.
If you missed the "Ignore All Invites From This Friend" link on the latest invitation, you can set up a block before the next one arrives. Just click the account menu on the top right side of your Facebook page and choose Privacy Settings.
On the Privacy Settings page, scroll down to the Blocked People and Apps section and click on Manage Blocking. In the "Block app invites" area, type in the user name or e-mail address of the friend who keeps sending you the invitations; that person will not get a notification that you have blocked the invitations.