I will say this: The Twitter acct I have for my micro-niche adult site gets me HUGE amounts of traffic and my posts end up with an average of between 7%-20% engagement rate (some of them over 30%) - and it has grown from 0 to 1500+ followers in the last 2 months....with very little effort.... Tumblr was a similar story before the ban on NSFW (still gets me traffic, just not as many new followers, existing base of 25k+ there) .. FB no matter what I do, even only posting sfw content, the slightest MENTION of anything that could be considered NSFW and the page was banned...