It's a great activity to add to a bike ride, as long as you can resist the impulse to bring home more new books. At one point we had two or three overflowing Cub Food boxes of old SF magazines on our porch (inherited from local fan Denny Lien). I took a handful when I went out bike riding and my husband did the same thing on his nightly walks. The surprising thing was how popular the SF magazines were. My husband can only walk so far, so he was visiting the same LFLs over and over, and they were usually ready to take more each time. Anyway, almost all of that stash is gone now.