Meanwhile, I will advice them to set atleast 30 minutes post gap.
There we go - pretty decent idea. Yobit (or any campaign for that matter perhaps?) should count a maximum of 1 payable post per 30 minutes or maybe 3 per hour (1 every 20 minutes).
That would be a great idea. I'm sure the 30 minute gap for every post helps a lot to retain the good quality of a particular post (assuming that he is not a shitposter from the first place). Doing such thing definitely gives your brain a rest even only for a while and have some time to gather new ideas and motivation to post again. Are the spammers out there aware of a robot-like feeling every time they do continuous posting, what do you think? Then why they still do it despite of the bad feeling? Oh I forgot! Mainly because of money
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If we think that 30 min. gap is considerably helpful, what more of a 1 hr. gap per post? What do you think?