Ever notice how people texting at night have that eerie blue glow? Or wake up ready to write down the Next Great Idea, and get blinded by your computer screen? During the day, computer screens look goodâ€”they're designed to look like the sun. But, at 9PM, 10PM, or 3AM, you probably shouldn't be looking at the sun. f.lux F.lux fixes this: it makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day. It's even possible that you're staying up too late because of your computer. You could use f.lux because it makes you sleep better, or you could just use it just because it makes your computer look better. http://stereopsis.com/flux/ f.lux makes your computer screen look like the room you're in, all the time. When the sun sets, it makes your computer look like your indoor lights. In the morning, it makes things look like sunlight again. Tell f.lux what kind of lighting you have, and where you live. Then forget about it. F.lux will do the rest, automatically. Here is a review and user guide: http://www.youtube.com/watch?v=_WYNYU9kCto P.s: This is not my website, it's not an affiliate link, so I have nothing to do with this website. I just came across this great software on a tech blog, I found it very useful and thought it would be wise to share it with you guys 'cause I guess many of you are working on the PC during the night. Enjoy it.