Too much information
Sarah Perez is having a crisis with people who over-share items through Google Reader. Too much, she says, and it makes it hard to find the interesting/valuable content amidst so much clutter.
This is really annoying, yeah, but not nearly as much as those times when people have entire conversations through the Notes feature on the same item that gets shared, like, 30 times as we they all have to try and top each other with the latest witticism.