For any Twitter followers:
"Considering being a part of #veganuary in 2017? Take part in #veganrecipehour! 8-9pm (uk time) each Thursday. #vegan"
Generally this takes the form of recipes around a specific subject;
There's also #veganhour between 7-8pm every Tuesday, which is more general chat, tips and hints, etc.
For insomniacs, there's #veganfoodchat, between 1-2am on Monday mornings and Thursday mornings. The hosts are based in New York, which explains the timing. Sometimes specific food based or just general chit chat and sharing.
All the above are great #vegan communities! 
There are also Veganuary Facebook pages, but I'm not really into Facebook.