First, I'm reading only new threads on my subscribed forums. This reduces the number of new threads I see.

Second, this is why I suggest a check box, with a batch ignore. I can quickly click on several check boxes, then click ignore, and I would never see those posts again.

I doubt that this feature would help people that are looking at all new posts. Those of us that are shrinking the list of new posts in the first place would probably appreciate the ability to shrink the list further. I think that it would shrink the amount of bandwidth that RCU uses as well.