Company tries running Facebook ads that transparently point out how Facebook ads work. Facebook blocks the ads. Shocking! Mermaid diving––like free diving but while wearing a mermaid tail––is quickly becoming a real sport. Dunbar’s number says human brains can’t keep up with more than 150 casual friendships, but new research disagrees. And it’s time to vote on a name for the newest baby raven at the Tower of London.Sponsors:Mint Mobile, Get a new wireless plan for just $15 a month mintmobile.com/kottkeOur Opinions Are Correct, Subscribe on Apple Podcasts ouropinionsarecorrect.comLinks:Facebook Bans Honest Signal Ads on Instagram (Gizmodo)The Instagram ads Facebook won't show you (Signal)  Why so many people in China are becoming mermaids (CNN)Study Debunks Dunbar's Number: You Can Have More Than 150 Friends (Gizmodo)Human Brain Limit of '150 Friends' Doesn't Check Out, New Study Claims (Science Alert)Tower of London: Public to vote on baby raven's name (BBC) Vote on the baby raven's name (Historic Royal Palaces) Early Manned Spaceflight, First Spaceflight Information, Facts, News, Photos (National Geographic)Blue Origin targeting July for first crewed flight, opens auction for a seat (The Verge) SpaceX's next flight for Crew Dragon Resilience is a private launch of 4 civilians (Space.com)Kottke.OrgJackson Bird on TwitterSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.