del Function
Since September 27, 2008, a function to report a post that violates the forum's rules and to request its deletion was added to each board of Futaba channel. It consists of a hyperlink with the text "del" that appears in the upper right corner of the thread; clicking on it opens the "Form for deletion request" page, where the type of reported content can be specified. Reasons for reporting a thread include usage of indecent pictures, child pornography, doxxing, slander, intimidation, spamming, harassment, etc.
In response to these reports, administrators of the site can proceed to delete the offending image, reply or the entire thread, as well as blocking access to it. If the offense is deemed severe enough, there's a possibility for the IP of the poster to be displayed publicly. In these cases the IP is displayed using red numbers; these posters became known then as akaji (赤字, lit. "red letters"). According to comments from the administrators, there are also cases where the information of the person who initiated the report is saved.
In addition, a function was added to all ID-less boards on July 2013 where, upon the number of deletion requests exceeding a certain threshold, the ID of an otherwise anonymous poster is revealed forcibly.