I have downloaded the Pidgin and have used it at work with others. I really do like it - it works great if others are on, but there are many days I forget to turn the same on myself. It's like a new toy - you use it a lot at first and then you kind of forget about it. It is very handy if you are working on something and need to chat with someone from another office - quicker than email. I looked at Twitter but, to be honest, was not sure how I would use the same for work purposes.