Yes, I was wondering a similar thing. I think it's good to ask yourself what your goal is. If it's just to get your articles seen by people interested in Britain and Ireland, tags might do the same thing. If you want to curate other people's articles about Britain and Ireland, a list might do the same thing. By running a publication, you could just be creating extra unpaid work for yourself, and stress when people don't do things according to your rules.

It's easy to find tags, just search for something in the search box and it comes up with suggested tags. Then click the one you're interested. Then it shows other suggested related tags.