For me too. It's a shame given the inflammatory title - I really want to know what it means.

My guess is it's either about a picture of Donald Knuth, or Knuth's reward checks, being put in picture frames.

Neither.

Aw. Well, it was worth a shot, that kind of mild homonym abuse is kind of direction that these sorts of titles usually tend to take. Fortunately the real story is more interesting.