This week on Spark's regular, over-the-air radio broadcast, you'll hear an "encore presentation" of Spark 117: Virtual Street Corners, responsive architecture, and the future of public libraries.

Because we've promised no more podcast repeats, you won't find this episode in our regular podcast feed. But if you would like to listen again, or check out any of the links mentioned on this week's show, follow this link to the show notes: Spark 117.

We'll be back with a brand-new episode of Spark on October 24, 2010.