First off, I haven't posted/read here in forever (not that I posted a lot to begin wtih) but I happend to check in today and read this topic, great stuff!
I've got an optic nerve disorder, so about 3 years ago I lost a good portion of my vision and am now legally blind. Being a nerve disorder there is really nothing to be done for it so I'm basically always running blind. I can see enough to get around, not get hit by cars and the like (though I can't deny tumbling over a curb/pothole/step on occasion) but most debris is pretty tough to spot.
Shod running was really hard on my knees, but for the longest time going barefoot terrified met. Eventually I converted, but wouldn't run anywhere but the nicely groomed sidewalks at the park and got some vffs for everywhere else. Lately though it seems my feet have been rebelling against any kind of footwear, so I've basically ditched them, and I'm loving it! Even some of my freinds who run barefoot give me crap about it because I can't see all of the glass that's supposedily eveywhere on the road, so it's pretty awesome to hear your stories!