Comment As the originator of Category:Wikipedians by sporting team (support) I just want to explain how it came into being. I was creating userboxes for sporting team supporters and wanted somewhere to put them, rather than leave them as orphans. I didn't see the point of creating a "List of ..." page and being relatively new to Wikipedia, I looked in Wikipedia:Wikipedians and saw various similar categories. I concluded that creating another one would be acceptable. As for my original motivation for creating the category, all of the userboxes are listed at Wikipedia:Userboxes/Rugby Union, so they would not be orphaned if the category was deleted.
Myself I have been contemplating whether Category:Wikipedians by sporting team (support) and the like are a wise way to use the resources of Wikipedia, but I have not come to a conclusion yet. I think we need to strike a balance between writing an encyclopaedia and creating a community.
