Xoogler here... my favorite Maps spam story is how there was a cron job that ran every (I think) 6 hours to analyze and clean up suspected scam listings [1]. The scammers figured out when the cron job runs, and set up their own cron job putting up their listings again in the minutes after Google's finished.
It's a well-known problem on Maps and has been known for years. It boils down to: scammers are smart and resourceful and very good at making their scam listings look like real listings.
[1] if you're wondering why they didn't do the filtering at submission time, there was a good technical reason for this at the time that I don't remember anymore
It's a well-known problem on Maps and has been known for years. It boils down to: scammers are smart and resourceful and very good at making their scam listings look like real listings.
[1] if you're wondering why they didn't do the filtering at submission time, there was a good technical reason for this at the time that I don't remember anymore