It's still amazing to me that these posts show up directly in my reader, seconds after I post them.

I would like to have a version of Markdown that allows me to add microformats classes to links and text.

Perhaps it's possible with some kind of introspection to copy fields from a microformats.Data object to a normal struct, just like how "encoding/json" works. You could create your own structs and copy those fields from the MF2 into your own data model.