So overall, it seems quite logical to me that the most popular board on Bitcointalk right now is the "gambling" section. The most obvious use case for cryptocurrency, wouldn't you agree?
It's the most popular because the product is a gambling product, if an altcoin campaign comes up, their focus usually goes to the altcoin discussion board for more visibility because that's where there is more value.
Gambling company generates more faster than altcoin, that's why the focus and attention is on the gambling section for more value.