Good luck with your BMTalk

IMO, you should make it unique or even better. It's look the same as facebook which I really thought it's FB upon viewing at the very first time.
I'm thinking of giving rewards worth of bitcoin weekly so that many users would join the platform. Also, I'm thinking of giving rewards to those who would invite to come to the community(like an afffiliate).
Same thing on what steemit did if you want to get more traffic and members. You should allocate a decent budget to make it happen, making an affiliate would work since there's a reward for every successful registers. You can also hire some good writers to make interesting topics to start conversing there.
But as long as there's a reward, bitcoin or any good altcoin traffic will come.
Yes, it is same as facebook. But with Bitmoneytalk, it is only for people who wants to share about crypto. There's videos, blogs, forums, marketplace etc. all about crypto.