Just last Thursday, I got some good advice from a dude riding behind me on the bridge. He told me that the setting that I was using on my tail light was a bit too bright. So I changed it from slow blink to a faster blink and he mentioned that it was better. Never would have known that it was blinding/annoying to some riders since I cannot ride behind myself. That's some good feedback that I can appreciate in addition to the shorts comments above. Don't want to blind and/or scare the other riders off now do we?