I've never heard of Nextdoor.com. Is it new?
Heartthrob? Uh, no. ...
Yes! I've seen several articles to that effect. Here's one from The Atlantic:
https://www.theatlantic.com/technology/archive/2020/04/anthony-fauci-coronavirus-crush/609544/I can kind of see it. Of course, he's no Sam Elliott, but he's personable, knowledgeable, seemingly honest and has a cute accent.
Nextdoor.com has been around 5-10 years. It's a site where you can exchange information with your neighbors, and those in adjoining neighborhoods. Sometimes it's very useful, like if you're looking for a good painter or your dog is lost or you're wondering what all those sirens last night were about.
Other times ... less so. Like scoldy threads that go on for hundreds of comments about whether people should wear masks when walking outside (even on the almost deserted streets of my residential neighborhood).
The site is national (though you can only sign up for areas around your own address). In your living situation, it might not be as useful. Though maybe you have something similar in your condo building itself.