Country tags have a bit of a history on this site but the general consensus seems to be that they serve a useful purpose. Unfortunately, even when they are added to a question, they often end up ignored because many people don't check the tags before answering or commenting.
I thought that experienced users wouldn't fall for that but I just noticed that I've personally failed to notice a tag on a question I recently answered. I even guessed at the location based on the OP's name but never thought to check the tags.
So my suggestion is that these tags should receive some CSS love to make them visually distinct from the other tags. Our current site style is very clean and subtly emphasised tags shouldn't clutter it too much and would be a valuable visual aid.
Note: I've created this topic to see if there's enough interest in the general idea to explore this in further detail. Whether we can and how the tags should look is not relevant unless we've establish a consensus that's in favour of this change. Based on previous discussions on this topic, it should be possible. Monica mentions tag flags here1 and this meta already uses visually different tag types which means that it's technically possible.
Previous discussions on the topic:
- Is there anything we can do to highlight the country/culture specific tags? - No suggestions, only point raised is to include the location in the actual question (which is a good remark but skirts around the problem)
- Should we have country specific tags? - Consensus: yes, but only when they are actually relevant
1 - Monica expanded on this in her answer below. She was referring to using country flags as tag icons. Icons are in use as a form of sponsorship on StackOverflow tags