Of course it is so. Social media gives a huge quantity of referrals but i think that it is often not fair because most often the link is hired and you become a referral and even don`t know about it(if the is fair - i think that this is correct and join it by myself often). But lots of men think that this is ok, so i willn`t argue with them - this is their decision and if this is ok for them - my opinion costs nothing.
When it is published on social media, that will be a public consume and we can not do anything and do not know what they will use. So we need to be careful to spread the links to prevent something that we do not want and only spread the links if we know that place is safe, although we are really not sure that it is 100% safe. We may think that is okay because we do not know how it can happen, but if we know about that, it is difficult to stop that as that is already public consumption.