With regards to "This is tricky, Scoble alone has shared something like 60 items just today. How do you people deal with this?"
Have never used Netvibe, but I usually end up with 160-200 new RSS feeds a day to get through. I love Reader's keyboard shortcuts, allows me to weed through it so quickly. I check in the morning, at lunch and in the evenings. OF course, I don't get my email to zero, as much as I try.