The “massively-popular” Twitter accounts EarthPixs and HistoryInPics were started and run by teenagers—who were making almost $1 million a month from the advertising on their sites, all while still in high school. Now the 17 and 19-year-olds are turning their lucrative hobby into a legit company, All Day Media, which recently raised $2 million in financing. All Day is now working with other similar startup outlets to help monetize their activity. (Gigaom)