Even if you're channel isn't Monetized, you might see ads running on your videos only if you're using a copyrighted content, as the copyright owner has an option to Monetize the video. Here's more info: https://goo.gl/xzPyNG . Hope this helps.
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Even if you're channel isn't Monetized, you might see ads running on your videos only if you're using a copyrighted content, as the copyright owner has an option to Monetize the video. Here's more info: https://goo.gl/xzPyNG . Hope this helps.