I think the 'bulb' is a GREAT feature. You can either look at all the new posts at a high level, or dive down into the subforums. This is actually a feature that has been requested.
Here's how it applies:
In motherboard, I have been told by some that all motherboards are the same, and have similar problems. For those folks, they want to see all together, and don't want to dril down into ten's of subforums. So now they can see them together. For others, they can just go to the motherboard that interests them.
Usually newbs drill down, and experienced folks like the high level view.