[tallanvor]

It's a matter of isolation. Working from home takes away the ability for you to walk over to someone's desk/office and have a quick chat or go over a problem that may be difficult to cover via email or IM. And no matter how accessible you try to make yourself, when you're working from home, the distance barrier means that your coworkers won't consider you as someone to contact easily. It also means people are more likely to forget to pass on information because when they don't see you, they don't think about you as much.