@rethink......I second your thoughts. But people in Sajha are talking about how to steal someone's wife/husband, someone is talking about Priyanka all the time like a mad man. Now, you tell me if I continue looking posts like this where will be my mental state? You become what you eat! Why do Yogis avoid eating meat/garlic/mushroom etc? It's because these food affects the mental state and turn their Sattvic mind into Rajasic and Tamasic qualities.
Threads in Sajha are like foods. These threads enters one's brain as information and it is very difficult to delete those stored information. These information can pop up anytime as a vritti and can affect the mental state. Therefore, touching coal (seeing stupid threads in Sajha) makes one stupid i.e you become what you eat.