Since the recent changes in Facebooks privacy settings they have inadvertently removed your ability to control how applications can post to your wall. If you have a lot of friends on Facebook then I suspect that your wall is probably starting to look like mine and getting overloaded with spam. There is a solution but it means manually blocking each offending application. This quick tutorial will show you how to get your wall back to the way it used to be so you can actually see things that are more relevant
Is Your Facebook Wall Becoming Cluttered With Spammy Apps?

You Have To Block Each Facebook Application Individually

Click on the link that takes you to the Facebook Application that made the post on your wall
You Need To Go To The Applications Profile Page

When you are asked to allow access to the Application DO NOT click on the “Allow” button. Instead click on the hyperlink for the actual application.
This will now take you to the applications main profile page
You Can Now Block The Facebook Application

Click Again On The “Block” Button To Confirm Your Choice

When you block the Application it will no longer be able to post on your Facebook wall. You now have to repeat this process for all the offending applications. Once this is done you will soon see that the amount of spam on your wall is greatly reduced.
Another Way To Block Applications
Another way to prevent applications from sending you invites it to block the application and to also ignore all further invitations from the person who sent them to you. To do this you need to go to your Requests found on the top right of your Facebook homepage
Go To Your Facebook Home Page

Select the “home” link when you are logged into Facebook. This should take you to your main Facebook home page. Your requests are located on the right hand side of the page
Select “Other Requests”

When you select “Other Requests” you can scroll down to the very bottom to see any unwanted application invites that you have received
You Can Now Block This Application

Select “Okay”

Just Click on the “Okay” button and the application will no longer be able to send you invitations or post to your wall
You Can Also Ignore All Invites From This Friend

If a particular person is sending you a lot of invitations for Facebook applications and you don’t want to remove them as a friend you can just choose to “Ignore All Invites From This Friend” the person will not know you have blocked them.
Privacy Settings
I hope that in the future Facebook will give a simpler one click option for managing how Applications can interact with your profile instead of having to do it in this more tedious way. I spent a while trying to discover if there was an easier way. I hope this blog post will helped to improve your overall Facebook experience so you can focus on what your real friends are actually doing.