Throwing in my 2 cents; hiking up our local trails in the hills, we often have mountain bikers zooming silently downhill around blind turns. Some say something when they see us, but that's usually at the last moment. I appreciate the one or two who use bear bells (thanks for giving them a name!), as DH and I hear them and walk farther to the right. However, they're popular trails, and
so many people walk their dogs without leashes despite the rules; yes, it's the dog owners' fault, but finger-pointing won't bring a dog back to life. So yes, I'm all for bells.
Also, as a volunteer trail steward, thank you for not skidding.