What happens if you block a Facebook App?

[Five T]

I know that if you block a Facebook App, You can't get gifts or invites from that app. I'm also wondering, I was wondering what were the top reasons people remove Facebook Friends. I was reading through the comments and a couple people said that they delete people because of frequent postings from Farmville, Another one said that they were all related to Zynga, Farmville, Mafia Wars and all game postings or something like that. Basically because the game posts spam up their newsfeed. But Someone replied to both those comments saying something like, Wow FB Users who don't know how to Block Apps. So I was wondering, If you do block an app, Will game postings from that App you blocked not spam up your newsfeed or will it still spam up your newsfeed?

[MP_doc]

You don't have to block 'em to get them off your newsfeed (unless you want to). You can just hide the app by clicking the little X that appears to the right of the status message, and then click "Hide all by Farmville," or whatever the app. Keeps them off your feed.