One founder, zero staff, making $1.2M in monthly recurring revenue
I get so much spam from this site.Nearly every day, I get 4 copies of a bunch of spam trying to sell me Shopify inventory management, Shopify store marketing, Shopify product feed management, Shopify shipping services, etc.Why Shopify? Because there's a script tag on my sites with the word "shopify" in it. I don't run any Shopify stores.Why 4 copies of every mail? Because I have 4 sites with that tag.BuiltWith sells my contact info in their list of "Shopify websites", which these people toss into MailChimp and spam away, despite the fact that unsolicited mailings are a ToS violation there and everywhere else.  I know BuiltWith is the source since one of them named their MailChimp list "BuiltWith Shopify US".It's a brilliantly simple and profitable site that I wish I had come up with, but the fact that the business model they ended up at is basically "harvested e-mail vendor for spam" kinda sucks.