In PieFed, communities are grouped under topics . Some of these topics are becoming quite big already (e.g. Technology and could perhaps be split up while there are probably very important topics that escaped my attention.

If you'd like a new topic, please suggest it in the comments below. There needs to be at least 3 reasonably active communities (active enough to have had a post in the last week) that can be put into the topic, to make it worth it.