The biggest change is that questions that are relevant to specific states of the great USA now have their own tags, but there are quite a few other new tags as well.
* If there is a general tag and a more specific tag that applies to your question, please only use the more specific tag. For example, if you're asking about how something works in Kentucky, please use only the "usa: kentucky" tag, not the "usa (misc)".
We do it this way because there's an upper limit on how many posts will display under a single tag.
* There is now an [unanswered] tag. You can add this to your post if no one here is able to help you. I'm not sure how practical it is, but I think it's interesting to see what kinds of questions we can't answer.
* As always, if you're not sure how to tag your post, don't worry about it. I check the tags on every post that comes through and add or fix if necessary. It's helpful if you can tag your post, but not necessary.