November 28th, 2019 at 6:13 AM
The alternate history forums have almost 20 million posts and have been running since I think like 2004, for comparison.
Two other larger forums I am familiar with:
Storm2k, with 2 and a half million posts since 2002
the Arctic sea ice forum, with 230,000 posts since 2013
Two other larger forums I am familiar with:
Storm2k, with 2 and a half million posts since 2002
the Arctic sea ice forum, with 230,000 posts since 2013