Twitter is rejecting posts containing JSFiddle URLs
It’s due to crypto scammers using it. From the founder’s post:At some point in the past crypto scammers used JSFiddle to host pages with a wallet code and posted links to that on Twitter.Due to the nature of JSFiddle, anyone can post anything, so wallet codes are ok – we did implemented a content filter to shadow-ban these.I asked Twitter if they they could help out and ban twitter accounts that were posting scam tweets that included links to the rouge fiddles.Twitter just went the easy route and blocked all jsfiddle.net links instead of blocking spammer accounts on their platform.Tried to contact Twitter many many times, with no reply whatsoever. They most likely have no-explanation-needed-policy, which is why they never replied.There's nothing that can be done here unless somebody has contact to a higher op at Twitter who has the decision power to help out here.