"For the past five year, Portland, OR has seen no change in the percentage of residents who ride bikes to work (6%). Boston, MA has been flat for four years (2%). Sacramento, CA is has been stuck around 2.5% for four years. New York City is just getting in the game at 1%, so it hasn't made it there yet. Even Davis, CA, the former Bicycle Capital of the World, has stalled in it's attempts to recapture its former status."

Not so sure commuter participation has much or anything to do with enthusiast magazines going belly up. It really comes down to the shift in the culture...ie, shift towards an electronic culture. My son reads stuff on line all day long. Would never think of buying a magazine, doesn't ever cross his mind. Still a shame, though. If it ain't in print, how will it be preserved?
Electronically, of course? Until a file is purged or the storage format is changed. Who remembers floppy disks of various sizes? Not the twenty somethings. Electronic mags are temporary. Won't be able to go back 100 years to read a review on a 2015 Cannondale or something unless somehow, somewhere, someone has it stored on a server hooked to the web.
It is possible to pick up a book published in 1850 and read it. I wonder if that will be said about electronic only format mags or books 150 years from now.