Very brave Paul in view of the comments which some can make here!
On a more serious note just keep it light and chatty perhaps offering some real time thoughts in the office on emerging subjects, even if it is conjecture. The last thing we need is rounded prose and it is a great place for general opinion outside of the normal editorial strings.
What do folk really think of W7, Apple iPhone, the state of the nation or whatever. I think it allows us to see what rumbles on behind the professional exterior.