So finally I am also one of the involuntarily bike-pool-sponsors in Halle (Saale).

On 1. June  2015 between 21:00 and 24:00 my "Scott SUB Speed 30 (2014)" was stolen. I could call myself  happy owner for exactly one year.
The bike was attached to a sign in front of a children's playground (across Thaliapassage 1, 06108 Halle/Saale) with a red ABUS Bordo GRANIT X Plus 6500.
Not sure how they managed to thread the bike over the transverse mounts of the sign, which were still present after they obviously removed the actual sign from the rod (see picture below).

I found the sign and the police hopes to find some fingerprints on it. The photo below shows the back side.

The bike looked similar to the green one on the picture - actually it is identical except the fixed lights and the front rim is still the same as the back green rim.