Is it just me or the site's having a 522 error?
Same here.
Just some silly kids with a DDoS attack. It's mitigated now.
I don't suppose it even remotely bothered you?

After all these years, I think you've built up a pretty good security around your side...
Sometimes these small attacks on the site are good as it gives the true picture of the security being implemented on the site and also it brings up new ideas on how to further improve them. Though Hackers will always try to exploit any loopholes on any famous site.