Flashlight to laser

Scary, but true. You can light a match with a DVD laser (and some soldering skills I don’t have). Shows 1) how good lasers are and 2) how much technology there is in what we see as simple things.

Users don’t look at ads

Interesting heat maps showing how little people fixate on the ads on a web page. But even so you’ll see colours / shapes / brands on the page so may get some communication across. I never see them thanks to AdBlock Plus, so it isn’t an issue for me.