https://www.digitalinformationworld.com/2018/11/linkedin-violated-data-law-used-18m-emails-of-non-members-to-target-them-facebook-ads.html
LinkedIn found to use email address of non-users to target Facebook ads
The Data Protection Commission found LinkedIn to be using non-user data to target new account holders.
use email address
https://sourceware.org/pipermail/cygwin-talk/2006q1/001800.html
[ADMINISTRIVIA] Please don't use 'cygwin at cygwin dot com' as an email address
please don t
https://sourceware.org/pipermail/cygwin-talk/2006q1/001799.html
[ADMINISTRIVIA] Please don't use 'cygwin at cygwin dot com' as an email address
please don t