While you can't block ads, you can control the type of ads you see on YouTube by editing your preferences here: https://goo.gl/vVWxiX . As well as, report any inappropriate ads for review here: https://goo.gl/YUVJ86 . 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
While you can't block ads, you can control the type of ads you see on YouTube by editing your preferences here: https://goo.gl/vVWxiX . As well as, report any inappropriate ads for review here: https://goo.gl/YUVJ86 . Hope this helps.