While attempting to browse Stumbleupon last night, I found it frustrating how completely inept it was at delivering meaningful content. And that's when it hit me that I should probably check how badly this problem was. So I decided to analyze my home page and see how much of what it recommended was worthless. Below is an annotated screenshot.
I really wish there was a way to filter for lists, so perhaps I'll make a userscript for doing so. Lists are really a huge waste of space, and in general just make the internet a worse place. Maybe it's about time one of us did something to eradicate them.