I couldn't pinpoint 0.000000, 0.000000 on the coordinates, but that is where Null Island is. Somebody in Findery's QA department probably had some fun with this place. When I dropped the note, it said "You’re leaving this note near the coordinates 0,0–literally the middle of nowhere! You can go ahead and post the note here, but if your note is meant to live elsewhere, please move it using the map controls." Good job, Findery!
It is a fictitious location where digital maps send all "bad requests". Google Maps and other GPS systems send "millions of users" here, when they make a search error.
"About seven years ago, Mr. [Nathaniel Vaughn] Kelso, who had heard the phrase used by other cartographers, encoded Null Island as the default destination for mistakes into a widely used public-domain digital-mapping data set called Natural Earth, which has been downloaded several million times. On a whim, he made the location at zero-zero appear as a tiny outcrop one-meter square. In no time at all, other mappers gave the “island” its own natural geography, created a website, and designed T-shirts and a national flag."