You're mistaken: Stack Overflow does collapse line breaks in posts. Example: http://meta.stackoverflow.com/a/152661/134300 http://meta.stackoverflow.com/a/15266

You're mistaken: Stack Overflow does collapse line breaks in posts. Example: http://meta.stackoverflow.com/a/152661/134300 http://meta.stackoverflow.com/a/152661/134300 It is a pretty common mistake for new users to make, though most of the time an editor will fix it pretty quickly and the user will learn.