Ev Willams explains why Medium has added tags to Medium’s publishing model. I am happy to see they have, partly because tags lead to interessting means of discovering things to read and writers to follow. But more importantly, there is great value in curation of topics: large spectrum topics like tech, design, photography, and food, and finer-grained themes like work futures, New York City politics, barbeque, or body surfing.
Aggregating everything tagged ‘food’ will rapidly become overwhelming and bland, so I anticipate that Medium will begin to feature the best (or most popular?) at the top of tag pages, while the uncurated stream will still be available.
Curation of tags is something I have loved in Tumblr, although there only those with accounts and signed in can see the curation topics. Medium’s approach is likely to be more open.