Thanks, Susan.
Not many people have the self-discipline to keep their personal email and other social networking "responsibilities" from creeping into their work day. A recent study on "Net Generation" workers found that many do not try to keep them separate.
It may be helpful to give yourself two 15-20 minute breaks during the day so that you can check these things so that you do not feel like you are missing anything.These could be your "coffee breaks"