yobit is a very bad exchange, the server response is very slow, what's worse is their cs is very slow too. This is the first time i've heard of the Cryptotalk forum, but i have no intention of trying to register, let alone buying TALK tokens because i'm more comfortable discussing here.
No wonder why I never heard of this exchange anymore. Newly released exchanges are far more popular than this exchange even though they are more older but cryptotalk is also not a new website and if I'm not mistaken, they are being advertised on the forum before via a signature campaign but it was boycotted because they are suspected to bring spam in the forum because of their rules and payout structure.
No point on registering on their forum anymore because it's already dying and what can you get there when you can get all your cryptocurrency needs on bitcointalk. Why will the coin go 50x, who will hype it? The yobit team? But, it's still risky to get in.