These users are supporters of Borussia Dortmund. To add yourself to this list, use the following text on your userpage.

Code	Result
((User:Dwscomet/My userbox creations/BorussiaDortmund))	This user supports Borussia Dortmund.	Usage
((User:UBX/BorussiaDortmund))	This user supports Borussia Dortmund.	Usage