Comment 16 for bug 546650

No point in making it clickable as many notifications don't have a default action to be executed when clicked. Besides, the specification of notify-osd, https://wiki.ubuntu.com/NotifyOSD#Interaction, explicitly states that "Other than that hover effect, bubbles should not directly respond to input devices in any way."

Considering that notify-osd is already integrated in Ubuntu according to that specification, there is no point in further discussing alternatives in a bug report about a regression in living up to the specification.