Someone earlier was talking about filtering. Many of us have watched a cross looked at conversations. Conclusion: If someone posts more than 16 posts (there are exceptions) they are spammers. Look at what they post in relation to answers. Is it just chat? Are there any relevant links to add to previous research. Comments can be be relevant. It's been said many times that posts with 5 pics or more are spam. Look at the mb of the pics.
Unfortunately 8kun has become a chat room. Very few original researchers post now. Let's hold the line guys. It's a great time to be alive.