What are the ethical concerns about using this and storing the data? If I wanted to use this on my site, should I let visitors know, or is this data fair game to store? I rather not use the location data (or any of it) if there could be an issue.
Since websites need a privacy policy if they have users in California anyway, you might as well put your use of the data into it.
You should always tell your users what data you gather and how you use it. If you only let the data stay in the browser and never send it to the server then tell them.
2: None of this is being stored, beyond a cookie. Of course, you can call back to the server with that data, but the server has your IP address, which is where the location data came from.
