I set up a Tactical Wargame Facebook page. Xenonauts obviously gets a mention. It covers both PC and boardgames.
Xenonauts developers are especially welcome. You can post updates there etc.
Come and sign up if you fancy a chat. I will also try and keep people aware of any tactical type games that are out and about.
https://www.facebook.com/Tacticalwargame
Edit: This ain't SPAM by the way. Sorry if it looks that way.