2 ms·Well done with the "Europe" tag includes anything with the "London" tag idea.by jorangreef 15y agoWell done with the "Europe" tag includes anything with the "London" tag idea.gnosis 15y agoThis idea is called "hierarchical tagging". Searching for that phrase in google should get you some links to other people who've discussed and implemented it.Someone 15y agoI think that was a joke. Over in London, 'Europe' is across the channel, on the mainland.