DANTE e.V. and other TeX user groups hold regular membership meetings und conferences about TeX, typesetting, publication. markup languages etc.
For a direct communication among TeX users, DANTE e.V. suggested regular local meetings some years ago. Thus there are many TeX-Stammtische in many cities in the German speaking countries. Everyone is invited to join in.
Other TeX related events can be found at the TeX calender.