We regularly verify the legitimacy of the likes/dislikes on a video while removing all the spam periodically. Learn more about it here: https://goo.gl/nGdDgK . Hope this helps clarify.
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
We regularly verify the legitimacy of the likes/dislikes on a video while removing all the spam periodically. Learn more about it here: https://goo.gl/nGdDgK . Hope this helps clarify.