Definition from Wiktionary, the free dictionary
imageboard (plural imageboards)
- a type of Internet forum that revolves around the posting of images with minimal associated text, that is often characterized by the near lack of moderation, and by the freedom to discuss topics that usually can not appear in more mainstream media due to their editorial policies
- While the name only suggests that pictures are attached to posts, the term conjures up the meaning of somewhat of a Wild West place where anything goes.
- The term enjoyed the surge of popularity when celebrity photos were leaked on the 4chan imageboard in 2014 celebrity photo hack.