No shakedowns to my knowledge and I've been around Bluelight for a while. Unless you are taking extreme measures to protect your identity when you get on the internet in the first place... You have virtually no privacy. That being said: Do you really think that anyone cares what you're up to? Shit dude, if you are using social media just assume you are being monitored by the state. That's the world we live in. As far as Bluelight goes, it is a safe space considering everything else. You're fine, don't sweat it.
To expand a bit. Don't use your name, don't give out your personal information to people you don't trust. Bluelight doesn't sell your info like social media does. You're probably safer posting about yourself here then on a place like Reddit.