- http://etherpad.mit.edu/p/samthetechie-explores-berlin
- https://maps.google.com/maps/ms?msid=212377250988774351922.0004e410f606afeda2226&msa=0&ll=52.49198,13.451031&spn=0.000479,0.001206
- https://maps.google.com/maps/ms?msid=212377250988774351922.0004e7aa95a32bcd2a833&msa=0&ll=52.50243,13.426838&spn=0.061234,0.154324&iwloc=0004e4110824604a63613