I used to have a rss subscription on a obscure SO tag I was interested years ago. The tag had like a couple of posts a week, and I would read the question in th

I used to have a rss subscription on a obscure SO tag I was interested years ago. The tag had like a couple of posts a week, and I would read the question in the rss reader and click on what I am interested in. So tags probably do not work well on a popular topic, but outside of that, they can be useful.