To answer your original question, yes, I have had my posts put up automatically, just like you, on Storify, Twitter, Google, Yahoo, Bing, etc. Posts on MyPTSD are also on Facebook. The site has been used to sell advertisements too.
Why are you most concerned about Storify? I'm not sure you understand how Storify works. It was explained to you by Anthony on this Help Desk thread: Link Removed but if you google "how does Storify work?" you will get a better explanation.
It's not like Anthony cut and pasted your specific post and wrote it as his writing. He could do that, but that's not what happened here. Lashing out and calling him a predator isn't going to help.
It's my understanding that myPTSD is linked to social media in order to increase traffic and increase funding so that there can be a site at all. You do know that it takes thousands of dollars annually, not to mention countless hours of maintenance work, to keep this site up and running, right? You know that Anthony has footed the bill for all this when donations didn't cut it, right? Posts on MyPTSD are on social media for our benefit - not to prey upon you or anyone else, like you have implied.
It can be very painful for most people when they first realize how public everything is, especially if they believed there was privacy when there really isn't any privacy on the internet. (Frankly, it's no longer wise to expect privacy even on email, but that's another matter...) You are right that nothing you posted, or that most anyone has posted, is private. No one promised to you that it would be.
You know everything is public, and is automatically posted on other social media sites, and you get to choose what to do. If you want a 100% private forum, you have all the ability to go and start that forum. You will struggle to get traffic to the site and build a community at all, and to find a way to pay for the forum, but that is the trade-off. You get choose. No choices have been taken from you.