Another story from 2Denker is up: http://pharo.org/success/MultiCity
Client seems to be done using Amber when I check the login page which was styled with Bootstrap. Server in Pharo with Nginx. I guess you use Mongo as DB (with Voyage or without). @Norbert/@Marcus: if possible can you share with us a few more technical details about the technologies/stack used. Also about size (LOC, users, nr of images) and pitfalls ... There is always something one can learn from the experience of others.
