I occasionally have to work on integrating with APIs for various user directory services, and as part of that I have to create a bunch of fake users with silly names for testing.
These services are also rather hungry for you to sign up for their more advanced/larger volume services though, and some of them are not beyond trying to contact users to try and upsell those services. So, every once in a while, I’ll get an email that literally says “Hello Bob Testuser, I’d like to discuss how we can help you in the mobile space…”