Re: So moderators think they are very smart.
What is more important , popularity of and traffic generated by threads or proper classification of threads ?
Both actually... the purpose of a discussion board is to invite participation but also to act as an eternal knowledge base of the communication and collaboration that goes on. A proper taxonomy is a cornerstone of any website let alone a discussion forum. We need a good taxonomy for search optimization, traceability and filtering. The administration spends a lot of time coming up with forums / sub-forums...
Why not just have one grand catch-all forum then?
This is not to say that a thread with images cannot exist in other forums... it sure can... but in your thread, the starting post consisted of only images, and no discussion. As the OP of the thread, you need to start a discussion and illustrate (explicitly or implicitly) that your thread belongs in that particular forum... as highlighted by Shikra's example above.