Unfortunately the OSM website has a limit to how many it can show you at once and it shows the most recently updated ones, so you can't see how many unclosed notes still exist.
One of them is over five years old and requires on-site verification, so I know what I'm doing this weekend!
Everything #OpenStreetMap related is welcome: software releases, showing of your work, questions about how to tag something, as long as it has to do with OpenStreetMap or OpenStreetMap-related software.
OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
Join OpenStreetMap and start mapping: https://www.openstreetmap.org.
There are many communication channels about OSM, many organized around a certain country or region. Discover them on https://openstreetmap.community
https://mapcomplete.org is an easy-to-use website to view, edit and add points (such as shops, restaurants and others)
https://learnosm.org/en/ has a lot of information for beginners too.
I did try using a - in front of the user name, but their notes still showed up. :/
it's working for me, try without a space, e.g.
-usernameLooks like it might have been case sensitive.
Oh yes, osm usernames are strange: they can also contain any unicode characters, spaces, emojis, and you can change them anytime. I don't know any other site where username requirements are these lax.
There were already minor abuses, a troll registered as the username of a DWG member, but replaced one letter with a homoglyph. E.g. these are different unicode letters:
oоοJust copy them to a unicode decoder.