Hey, it's always good to get some real insights for me as a traveler! I was in Chiang Mai as well a few months ago, but can't recall seeing this! Next time, I'll keep an eye open for it!

As for myself, well, I've just made a new web app for travel bloggers called Steemit Worldmap. It allows travel bloggers to add their posts onto a worldmap. You can see it here: http://www.steemitworldmap.com

If you want to share your posts on the map as well you can find more information on how to do it here: https://steemit.com/travel/@steemitworldmap/steemit-worldmap

Basically you add a sentence including the longitude and latitude value of where the post happened, and the script will do the rest!