Most people here surely know "BountyDetective" because he manages a lot of campaigns, when we register he will definitely be asked to fill in an Email: (in form)
"Email addresses will be hidden, and won't be used for any spam / promotional actions. Emails are to verify users when comparing data with projects own data."

But in fact they publish our emails in spreadsheet, is this what is called professional We know that email is privacy and not for publication.
How do you think?