Why did you decide to call it LampNote? Seems pretty hard for someone to guess what the app is about with that name.
I did wonder how well it would travel, whether or not people from outside the UK stuck notices on lampposts, if they called them lampposts etc.
I haven't really discovered that many connections between start up names and their purpose.
Maybe it could have been called cafecorkboard.com like the other post here, or telephonepolenotes.com
Maybe it's an easier correlation to someone in the UK?