Micro.blog doesn’t support the use of hashtags. We use emoji as a way to automatically collect posts in specific categories together. Manton has blogged more about this. Below are the currently supported emoji tags.
The following topics work a little differently. They are either curated manually (photos), automatically collected from keywords (Micro Monday recommendations, Inktober, NaNoWriMo), or set from embedded
audio tags in a post (podcasts):