Comment 8 for bug 850285

It has become clear to me you don't want to implement this feature.
Anyway, I don't use googsystray because its development was abandoned and it doesn't work with Unity.
So I'm trying out other notifiers. But all the notifiers (compatibles with Unity) that I have tried are, for my needs, too basic.
In any case, thanks for your work. Popper is almost what I need. ;-)