On Facebook, you can have a secondary profile tied to your main account. That is, you use the same log-in information for both. On the facebook website and mobile messenger, you can switch between them with ease. It would be nice if this feature could be added to the Opera sidebar messenger because it would allow those of us who use two profiles to chat from the messenger sidebar no matter which is being used, especially if the secondary one has become the one used the most as in my case.