Popular instant messaging client imo will discontinue support for third-party services this week. That means no more AIM, Facebook, MSN, Skype or Yahoo integration.
If you have chats using those third-party services stored in imo and you want to keep copies, you'll need to export them quickly, before they disappear altogether. Support for new chats stops on 3 March, while you can export logs until 7 March. Those are both US dates, so Australian users can probably wait until 8 March, but I wouldn't hang around if I were you. Further details are available on the official blog post announcing the change.