"One thing that tends to annoy me as much as a lack of lights is cyclists whose rear lights blink constantly: it says "look at me! look at me!" in a thoroughly distracting manner, like a hyper child in a supermarket. It's even less excusable in broad daylight, when it distracts drivers from (eg) oncoming vehicles."

Wow, if you're distracted by a tiny light powered by a couple of AAA batteries that will likely be in your field of vision for a very brief moment then perhaps it's time to give up driving. I keep my blinking light on just because of all the drivers out there that are so easily distracted.