Such a good idea, love it! How does moderation work though, in the case of certain writings or symbols that might need to be censored?
Also would be cool to have more places available, from maybe Google street view?
Moderation-wise, I have a dashboard where I can see all drawings and quickly delete anything bad. Users can also report stuff, and anything with enough reports gets auto-hidden. Looking into automating it more down the line as well.