You have a good idea. I've been webmastering since around '95 and all the gurus have preached find your niche. Something I really was never able to do. haha I have a hard time focusing on a single tree when there is a whole forest to explore. Perhaps that's why I still work for a living... haha

• I'm really amazed that hard print magazines and newspapers are still around, but they are. They most all do have an online presence. Some more than others.
• Interesting stats from https://www.statista.com/topics/1265/magazines/
  Each year $75 million is spent on the 7216 magazines which are read read by 95.33 million people to see $14.43 billion of ads. The biggest advertiser is L’Oréal SA, a world leader in the beauty industry.