I've been seriously annoyed about that since I started working in one of those open offices. I've read a few articles about it and cannot understand why would someone like to be in such an environment. Stack Exchange's organization/culture seems to be a quite balanced approach, providing both the common areas where people can be together working/relaxing AND a proper space for them to stay focused while working alone on something. Really good to know there are companies trying to get it right instead of cool.