I haven't yet. I'm a bit torn on whether or not to release it given the potential privacy implications. With more sites and a classification algorithm, one coul

I haven't yet. I'm a bit torn on whether or not to release it given the potential privacy implications. With more sites and a classification algorithm, one could say an email is a "Gender, Race, Age Range, Job Industry, Interests, etc." What makes this tool work is most sites (as an UX feature) will tell you if an account/email already exists. Whether that be an API call or a notice saying "Your password is incorrect", you'll be able to get the data you need. It was a learning experience for me to use Go to wrap each site check in its own goroutine to leverage concurrency. Quite nice.