Mostly used to pass the time.

https://www.reddit.com/r/ANormalDayInRussia/

https://www.reddit.com/r/Documentaries/

https://www.reddit.com/r/itsaunixsystem/

https://www.reddit.com/r/KenM/

https://www.reddit.com/r/tiltshift/

https://www.reddit.com/r/tooktoomuch/

https://www.reddit.com/r/UnethicalLifeProTips/

https://www.reddit.com/r/youdontsurf/

https://www.reddit.com/r/youtubehaiku/

https://www.reddit.com/r/videos/

https://www.reddit.com/r/linuxadmin/

https://www.reddit.com/r/ProgrammerHumor/

https://www.reddit.com/r/shittyprogramming/