Various social media schemes that seem to offer clear advantages and some control to members also have an uncomfortable intrusive aspect, a sort of psychological ponzi scheme or pyramid scheme that has members bidding for new members, with the medium being an active agent, and also gathering data and aiming all sorts of ads and messages. All of this is a long way from murder, but has a strong whiff of manipulative coercion. Even linkin, which is supposed to be more career oriented, strikes me as spooky. I can be a paranoid old hermit, but I also have a good sense of when I'm being shouldered. I'd be careful with social media, very alert, skeptical, and suspicious as needed.