That's messed up!
That's messed up!
Without you proving you're the account owner; you could close down random peoples message board.
Edit: not sure why I'm being downvoted; it's true. If someone has to opt into using your product you're starting out with friction from the gate which is difficult to overcome.
Morally it's questionable but trying to create a grow a product it certainly shouldn't be surprising. Gitter does this and the HN crowed seemed to really like it last I saw it posted.
I don't want anybody to make those decisions for me. Just because I set up a public profile on one page, does not mean, that I want others to scrape data from it and use this for their purpose. Of course, stuff like this happens all the time, but it doesn't make it right.
Wait for the backlash... People typically do not like choices being made for them (once they are made aware of said actions).