https://www.modern-age.com/p/upper-east-side
It's an IV infusion clinic.

It is a produce stand on the sidewalk, selling fruits and vegetables. It is there permanently but (like many others in NYC) has no particular sign identifying its branding nor owner.

I don't know what the correct tagging conventions are. New York City has thousands of ordinary residential or commercial buildings that have their own names, such as "The Dakota" or "The Flatiron Building". I just used the StreetComplete menu to add the locally used name for this building, but the app might be picking the wrong tag for this purpose.

I saw a green tree among the bare branches in the forest while passing on I-80. Perhaps people on the ground have a better view of the landscape than people viewing it from 100 miles up?

The trash can is on the sidewalk immediately next to 1st Avenue. In the OSM.org and the EveryDoor renderings of the avenue and the sidewalk, there is a big gap between the two. The trash can is placed immediately outside the edge of "1st Avenue" as drawn by EveryDoor. Is there a rendering problem? Or a conceptual problem on my part? (Note: I am updating maps with no aerial imagery overlay, just doing local surveying.)

I re-surveyed the area in person two weeks ago, and entered another note with my findings: note/4066662 Today I checked that note against the OSM database and it appears that the database is accurate (there are 4 lanes marked on York Ave in each block between 60th and 63rd). So this discussion should be closed. (I don't know how to do that.)

There was no obvious way to tell on the spot if something would be using that abandoned space after the winter's over -- or not. For now it is closed, so that's how I labeled it.

I don't know what happened years ago. All I know is that I was at the 9/11 Memorial & Museum a week ago, and there were people selling tickets at the window, and hawkers encouraging people to go inside. You definitely couldn't go inside for free. That's why I labeled it as charging fees. (You can wander the grounds and see the reflecting pools and such without fees.)

I think you're talking about York Ave between 60th and 61st. (Multiple roads were edited in that changeset.) I would have to go back to re-survey. I can see (in the iD editor) the Bing sat imagery but it does not give sufficient clarity to let me say how many lanes there are in each direction at each end of that block of York Ave (at 60th to 61st). Note that turn lanes are not counted, but some turn arrows may be obscured by cars or trucks in the image. Also see how the double yellow line in the sat imagery drifts to the right mid-block, with the stop bar in the northbound lane at 61st being only 2 lanes wide. In short, there's no substitute for actually being there, so I will defer trying to update this until I am (or some other editor is) actually at the spot again.

It was one of the choices in the EveryDoor app. I assumed that it refers to meat, which this restaurant offers a lot of. However, i see in taginfo that diet:Carne=yes only has a few uses in OSM, so it's probably a mistake in EveryDoor.

Thank you. The author of Every Door changed their signing key, so F-Droid wouldn't automatically update it. I had to delete the old one and then restart F-Droid and then install the new one. I have Every Door 3.1 now.

Thank you for fixing that, Kevin!