During the Nacht und Nebel-Festival in Berlin-Neukölln the installation “Dear Sonnenallee” offered passer-bys and festival visitors to publish ideas, desires and suggestions to a broader public about this street. Additionally the individual opinions are discussable via text message. The medium to hand in the opinions is our Hybrid Letterbox. The installation’s aim is a vivid dialogue about qualities and challenges of the neighborhood. Through a blog the discussion was able to continued throughout. All insights were handed over to the neighborhood management Donaustraße-Nord, which supported the installation. Special thanks to the Graffiti Research Lab Germany and the Café Schaumschläger for providing us with the technical infrastructure.