I think it's not far if i say that dollar and bitcoin are actually the leaders of their platforms. What's also crazy is how this forum served as the source of consumers and a big factor in increasing the acceptability of bitcoin by people. Really the design and everything about this community is genius.
I agree with you without Bitcointalk forum I don't know if people will discover Bitcoin and hasten the adoption process, everything starts here, name a popular cryptocurrency or any websites that related to cryptocurrency and chances are they have a thread here.