It would be kind of ironic to have an isitdown community on Lemmy itself. If an instance it down nobody from there would be able to post, and if the instance the community is made on is down then then none of the posts would federate
Have previously seen similar things posted into communities such as !lemmy@lemmy.ml and !fediverse@lemmy.ml but it would be nice to have a dedicated one IMO, probably a sister community for one of the lemmy status sites
This is legitimately a great idea. I recommend putting it on lemmy.ml to start with as they are the closest we've got to a flagship instance. Would say lemmy.world if they weren't down all the time