Hi, i am in crypto for some years, started from 0. For now i can tell that i know a lot of things about it, but still have to study a lot. I like unordinary projects and of course i will support your project as i can.
Never use HitBTC before, today register account there. But it is so slow on my comp, will try on phone. My friends are using it and didn't have any issues, hope the same i will.
Yobit is very specific exchange, i can not reccomend it, but to be honest i am using it from time to time and didn't have many problems. Just be careful.
It depends on campaign rules, some will count stakes without reposts, if there is nothing new, some can tell you to re-repost old or they will ask you to write your own posts. Better ask bounty manager.