Serious question -- is there such a thing as an anesthesiologist who is not "board-certified"? I shudder to think there are anesthesiologists out there who didn't have to pass any sort of certification process...
Yes, most are not certified because 'the board' is specific to each country and depending on country maybe each province/state or each city/municipality. To practice in a certain geographical area, you'd have to certified by the board in that area. Some countries have treaties that will recognize other boards as sufficient. In the end, it gets complicated and you only really need to worry about it if you are in the field.
What keeps me coming back daily are the links to stories I would never see anywhere else. I'm a TechnoDolt®© (I coined the word) and haven't a clue about coding and software et al, but headlines like "Robots Rule at Swiss Factories as Strong Franc and Wages Bite (bloomberg.com)," "What makes the perfect office? (timharford.com)," "Your personal Facebook Live videos can legally end up on TV (thememo.com)," "The Beauty of Nature Seen Through Creepy Webcams (wired.com)," "German parents told to destroy Cayla dolls over hacking fears (bbc.com)," and "Map showing the homeland of every character in Homer’s Iliad (kottke.org)" — 6 of the 30 links currently on the front page! — get me right where I live intellectually.