With WIO you can see directly in a permanent shown window which of your friends of the BettlNet FriendList and also which guildMember is online at the moment.
So you dont have to open guild or battlenet window all the time you hear the sound. Usually everybody also don't notice the chat message if somebody is coming online.
The WIO Window will automatically update if someone is coming or going offline and the current informations stays on screen.
You can resize the window in height and also move it to the position you like
This small addon is my first project, so please be kind if you want to criticize ;)