I'm simply using "cards" as a links blog. Initially I thought to use "articles" for an ordinary blog, and "cards" for links. However "articles" needs more work in order to make it a useful module (more widgets, ability to import a blog, etc.). So I integrated my WP blog into Hubzilla and made a unified side menu for both. "Cards" and "articles" are almost identical modules. They don't get posted on the wall or get broadcast unless you share them intentionally, but that's easy to do.