Relative links to posts, such as [this one](/questions/1)
, do not show up under Linked. See? →
This query suggests that relative links to posts are used ~1% as often as absolute links. Not an overwhelming rate, but that still adds up to quite a lot of ignored links. Personally, I've used relative links pretty often. It was slightly disappointing to realize that this habit had been counterproductive.
/
) are still supported; others once were but have been disabled.