I e.g. dislike a lot of Wikipedia links inside Wikipedia lemma’s where they link to the lemma of a thing in general, but not to its meaning within the context of the link placement, while the phrasing suggests the link will provide more context. That’s just like adding every single word in a sentence to its dictionary page to me

A quick search came up with this post ‘Semantic Markdown‘. It shows the issue of adding more complexity to markdown well I think

to at least having a parser that adds the additional complexity. Markdown always needs a parser

their incompatibility with the RDF ecosystem as there is no support for typed links in markdown

Chris Aldrich’s Hypothes.is feed pointed me to this resource on Personal Knowledge Graphs (which he co-authors/-ed)