Check out this page where you can see the books being added to LibraryThing, greatest online library service on the web (where else, right?), in realtime.
As Tim Spalding puts it in his posting LibraryHypnotismThing:
I find it hypnotic, both fascinating and will-depleting at the same time.
And he’s right! I should be soundly asleep by now, but I just can’t stop staring!