[Privacy](https://privacy.com/join/R5LE8) (odd name but apt), is a service that lets you create anonymous "burner" cards for purchases where you might normally use a debit or credit card. You add funds to your Privacy account and create single-use or multi-use cards with or without a spending limit. Numbers, expiration dates, and security codes are automatically generated. When giving your information to the merchant, you can provide whatever information you want and Privacy will confirm it. One of my use-cases is of course anonymity for online purchases but the "burner card" feature is fantastic for preventing services from charging you more than once for something. They operate as any other provider (Visa, Mastercard, etc.) and charge the vendor a fee for every transaction so the service is completely free for users.
Using my affiliate link, we will both get $5 credit in our accounts. If you already have an account, you can enter my referral code, `R5LE8`, in the settings.
[netcup](https://netcup.eu) is currently where the most services are running. They have fantastic offerings at most price points and incredible deals. I've been very happy with their service and *highly* recommend them.