Reader's performance anxiety, huh--I'm not sure I've ever felt that. Maybe in the sense that, wow, there's so much to read, or I really ought to read this book, but I don't have the time. But when I do read something, I suppose I either get something out of what I read, or I don't, and if I don't, I just move on to something else. Possibly I can get performance anxiety when commenting or reccing, though, because then you're expected to say intelligent things.