Hmm, maybe Telegram...

Almost every people who know cryptocurrency definitely using this social media (especially like me). I like Telegram is simple, fast, secure, synced across all our devices, and of course is FREE . (I think Telegram is like Whatsapp combined with LINE messenger)...

We can be chatting, share information, and publish some news or content on our own channel and group to the other members who using telegram too...

Also, I see so many ICO Projects promoting their project via telegram by inviting the bounty hunters to join telegram bounty campaign...