"For some, Twitter is a huge distraction: it’s like having a chat window open all day. Others have a problem with new e-mail popping in all day long. If you’re trying to get some serious work done and you’re not the type who can tune out a conversation going on near you, it’s probably a good idea to turn off the Twitter or chat client, and even close e-mail if you’re inclined to read and answer each one as it comes in"
A List Apart: Articles: Walking the Line When You Work from Home