The new Report button.
The new Report screen.
The Report button is used to report posts that break the rules. Examples of when it is to be used are spam, double-posts, inappropriate usernames, bad words, and more. Reports can only be seen by moderators The button looks like the words "REPORT POST" in a blue circle.
When you click the button, a message box that allows you to explain why you are reporting the post pops up.
This article is complete.