Another very visible change between Instantbird 0.2 and 0.3 is the possibility to set a user icon and a display name.
You will see a place holder icon at the top of the buddy list, just click it (this will open a file picker) to set an icon. The icon will be automatically resized and converted to fit the various size and format requirements of the IM networks you use.
Similarly, click the “Display name” place holder to edit it. This name will be visible in your contacts’ buddy lists (unfortunately this currently works only for MSN).
Here you go, your friends will now easily recognize you: