Here's my IT version of "Out of Office"

* People will seek you out if they think they need you urgently. It doesn't matter there's a 24 hour help desk available by phone or IM to answer the same question.

* Colleagues will IM you every time they see you online, even if it's 1am and you only signed on because you're on-call and need to fix something urgently.

* Some issues resolve themselves if you don’t answer straight away, but they won't tell you, so you still spend time answering them.

* Email is a chore to many people, so they don't bother to read what you said, even if it helps them out.