Tumblr is somewhere between a social network and an old-school blogging platform, and like most major blogging tools, every post has a dedicated section for freeform category tags. The tags typically appear in a smaller, lighter font under each post, visible but tastefully separated. You might tag a post with the name of a loose topical community like #writeblr, the name of a fandom or hobby, or an internal filter that helps people navigate your blog.
I really like this idea. No only has Tumblr done it right, so has Micro.blog.
Both are microblogging platforms with a timeline and the ability to do long form blog posts complete with titles.
I use Micro.blog for this blog and love it. I’ve settled on Mastodon for more of a Twitter like experience and use Micro.blog for blogging.
Having a true tagging feature would be really amazing and would clean up the hashtag soup you find in some Mastodon posts. 👍🏼