Instant messaging $($IM$)$ can be a useful tool within the office. It is generally informal by its nature and can also reduce productivity. How often has a discussion about something work$-$related quickly turned into a half$-$hour gossip session? You have a colleague who seems to have less work to do than you do$,$ who is always tempting you into a chat session. How can you manage this effectively without compromising the relationship between you and your colleague?