8 Chan is all anon. They are very particular about that. The pictures of boobs are posted as thank you for the bakers. So yeah guessing more males than females. It board culture to post these pics. You should have been around a month ago. Board owner was going to have a no boobs rule, due to shills posting questionable pics, and autists downed tools. Boobgate!! lasted about a day before it was resolved. Things that don't seem to make sense on the Chan's are likely Chan culture. Misspellings on purpose,certain memes,boob pics etc. Some of it goes back years.  The Chan's are last bastion of free speech on the net in my opinion. Get In there and explore it.