The reason this is bad is because fresh email lists like this are used with common password lists to bruteforce logins to common sites. With 1.9 million valid e

The reason this is bad is because fresh email lists like this are used with common password lists to bruteforce logins to common sites. With 1.9 million valid emails, odds are some have used insercured passwords on some sites. Because of this, emails are private information. If you are not posting it publicly, you will only be sharing it with friends and trusted companies. All of which should keep it secret and never have them leaked.