I'm not sure how to link to this because it's not a newsletter or a podcast. But if you're interested in Internet culture you should read everything Taylor Lorenz writes for The Atlantic. If you use a newsreader you can subscribe to her author page RSS feed (while they still offer it) or use IFTTT
and the feed to email new articles to you—then it would be a newsletter. You could also make a friend read them out loud to you—then it would be a podcast. It's worth the extra effort to make sure these work their way into your media diet.