@da oh wow, I broke the comment form, thanks for telling me!
Anyway, I haven't gone through all the broken links yet, so I don't have this analysis. A cursory skim of the list doesn't reveal any obvious patterns.
@roytang Your webmentions form is also broken. You need to provide an absolute URL rather than a relative one in the hidden target field.
This Mastodon instance is for people interested in technology. Discussions aren't limited to technology, because tech folks shouldn't be limited to technology either!