Privacy for your credit cards
This service is free and allows people to create a debit card for each website or subscription service you use.
Helpful for tracking expenses and allocating a budget.
It is also useful because you can limit how much each card can spend per transaction or within a time period, so if one website gets hacked, that card can't be used uncontrolled until its discovered.
Also it is really easy to cancel a subscription service because you can just turn off the card. I hear some services like funimation are making it very difficult to cancel subscriptions... but idk.
https://privacy.com/join/S9LGW
If you use the above link, you get $5 and so does the person that the link came from.
Kickback this time goes to Lux Brush as he discovered the site before I did.