e.g. curl -d "Visit my site spammer.com for your chance to win $100" ntfy.sh/{phil_alerts,controversial,topic3,topic4, etc...}
I have pretty rigorous rate limiting based on IP address [1]. If you have lots of IP addresses at your disposal, I may have a problem. So far it's been fine.
[1] https://ntfy.sh/docs/publish/#limitations
e.g. curl -d "Visit my site spammer.com for your chance to win $100" ntfy.sh/{phil_alerts,controversial,topic3,topic4, etc...}