I remember when I registered newly here. My email was visible and I was receiving generic messages like;
"Hi, I'm from bitcoin forum, can we get to know ourselves"
"Hello, how long have you been in bitcoin"
I was surprised why I was recieving them in my email instead of in the forum pm. Until an established member advised me to hide my email address.

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Most times we overlook the basics and concentrate more on the secondary and lose the primary.