I thought the point of voting was an endorsement of the work produced? Upvoting is no different to the 'Like' button on Facebook. If anything it's potentially worse as there can be a financial reward attached to your vote if you so choose. You're basically saying "I like your work so much I want to give you some money."

Most of these pedo's use social media platforms for pretty much the same reason as you and me. To make new contacts and exchange everything from ideas, viewpoints, story's and of course images. A lot of these individuals are pretty computer savvy. I've already seen some people on Steemit have been 'outed' for creating fake accounts by using friends and aquintances photos as proof of reality. It would be trivial for some low-life to create an account that was potentially untraceable.