[Aachen]

Anyone looking for this will already be in map/OpenStreetMap context. That people originating from StumbleUpon or a niche little place called ycombinator news are confused is not too surprising tbh: that very likely wasn't the audience they had in mind

[input_sh]

Considering the title starts with "Show HN" and that the HN username is very closely tied to the GitHub username, I'm gonna go out on a limb here by saying HN is indeed the target audience.