Dead link, QR code sticker?

first, a dead link here: Protect your bike

“check out Priceonomics’s exploration of the topic” leads to
“Not Found
Nothing found for the requested page. Try a search instead?”

I read somewhere that Bike Index offers QR code I.D. stickers (a great idea) in the same manner that Project 529 does. Is this true? I cannot find anything on the Bike Index site.

That link to protect_your_bike works for me. Are you still having trouble with that link?

Is there any option to report spam and abuse?