The harm is you are you and you are not them. They are them and no matter how much we think we can make their lives better, they are busy and don't want to hear it.
The problem is when they are kinda dumb (most of the time?) and the targed spam or leadgen job postings actually work.
"Job in your area paying $175k/year for your exact experience!" -- but when you inquire, it never exists. Conveniently they happen to have similar jobs with compensation structures consisting of wobbly jello.
So is it just matznerd.com and natmobi.com who's domains I need to add to my blacklist?
Because those sorts of words are exactly what _every_ spammer uses to justify their behaviour. (including, hilariously, such beautiful grammar constructs as "… trying to help wanting people connect with a …")
It's spam, no question about it. If I get it from you I'll probably just ignore it, but if I'm in a bad mood or looking for timewasting activities, I'll report it to gmail/rbl/mailchimp/campaignmonitor/your isp - mostly for the lulz, but partly because I feel I owe some of my time to occasionally trying to slow the inevitable slide down the tragedy of the commons that the internet has been on since the eternal September…