I have used Ghostery for years. A friend told me about it when i complained about facebook showing me ads for things i searched on amazon. i do use other tracking and ad blocker but ghostery was my first. Those blockers do not let me turn on or off specific trackers or ad things for each website. love that i can make any allowance permanent or temporary. Ghostery was the first blocker that worked well with my tablet and phone. I think ghostery is also very good about listening to feedback and making changes. i like that ghostery continuously updates yet is still free. i donate once or twice a year, basically anytime they remind me to donate. It is a great extension to add and worth giving money to as well..