I'm pretty sure this is not an error with my pc, because I tried to post on Chromium and Firefox with no success. I'm trying to post to This Thread, but something's preventing me from being able to post.
If there's anything I can do to help debug this, let me know!
Not 100% sure if it's CloudFlare or teksyndicate.com that's throwing the 403. It's definitely an interesting problem. I can see why it would throw an error, if malicious code can somehow get executed (depending on what language is backing the site, it's definitely possible) instead of parsed into HTML, it can definitely cause some issues.
Well, I tried to post the exact line that I posted here. 403 again. here's a pastebin of the line that caused it.
Without including that line in both this comment, and the comment on the other thread, I was able to post. I'm not sure if it got confused about all the inline code marks or something, but that was how I solved the issue. I just linked to an external site about how to do it.
Came across this too just now when posting and also thought of a internal intrusion detection measurement and changed my post accordingly. Hope it gets fixed or well.. at least a different error instead of 403 Forbidden is shown.