Don’t know how many up/down votes you’re getting, but a more polite wording is something like:

“In case others find this useful, this is why I built statusnotify.com. I got a notification about this 14 minutes ago.”

Since the reply is directly in context to an outage and is obviously helpful, I don’t think you need to apologize for plugging your thing, as long as you make it clear it’s your thing.

Service looks neat by the way, thanks for sharing. :)