The privacy issue also needs to be addressed on a cultural level as well. My first job was open layout but I had one of those nosey managers that wants to know what you're doing every 15 minutes. I got talked to for being on Facebook during my lunch break. In order to really have a successful open office layout you need to have everyone on board and prepared to "let go" a little. Yeah people goof off during the day. We aren't robots that can sit down at 8:30 and constantly type for the next 8 to 9 hours. At my current job no one really cares if they walk up to you to ask a question and you happen to be taking a couple minutes to clear your head and look at cat gifs. I think that's the way it should be.