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Pokémon Go players are altering public map data to catch rare Pokémon
(arstechnica.com)
This is a most excellent place for technology news and articles.
Google maps also has bad data for many places. My home address is the wrong street name. Google maps says it's "Drive", when it's "Court". It's been that way for 22 years apparently. Google is the only one that has it wrong. I've submitted 10 tickets to fix it, they keep denying the change.
Waze, Fixed it myself. OSM, did have it wrong about a year ago (before I moved in) was corrected when apparently a current OSM board member imported a cluster of addresses from the National Address Database.
Apple has it right. Bing maps has it right... Every other source has it right. Google maps just sucks.
What's worse is that many companies use google's dataset for address validation. Since my address doesn't "exist" according to the omniscient google, I'm just screwed when I enter my address on those sites.