Just a point on forum size. En World is much much larger now than before.
True but the traffic seems a lot lower then the height of the old WoTC boards (circa 2001/2002).
Buying online was still very new back then and most sales of 3rd edition books came from actual brick and mortar shops, not to mention that you weren't buying those books at 20 to 30% off like you can from Amazon.
Specialist forums globally have seen a downturn in traffic since the rise of Reddit
The 40k 5E PHB sold on Amazon was in April here on ENworld (they got that info via software used on Amazon) and apparently Amazon sells abot 30% of a books total release. That would have put the ales of a 5E PHB around 110k...
Huh. If those numbers are accurate, then I've massively over-estimated how well 5e is doing.
Isn't Reddit itself just forums? In 2012 I was playing a game where an entire clan was named Reddit. Said clan was not very good but it definitely helped with recruitment for them and they were one of the bigger/reliable clans out off the semi major clans. I think they lasted longer than the goons.
Make no mistake 5E has been a smash hit. Its unlikely they have sold more in the 1st year than 3.0 or the BECMI boxed set. The upper limit is probably 200k PHB but that would be close to all of the RPG market increase from 2014-15 according to ICV2 estimate. People see best seller on Amazon and assume hundreds of thousands of units sold but much like a NYT best seller one can do that without actually moving that many units. 5E is selling like gangbusters though for an RPG and D&D.