The spammer, identifying himself just as 'Steve', said that he has created a system that automatically posts affiliate links on Pinterest, a pinboard-style website for sharing images and content, using thousands of bot accounts.
The 24-year-old US resident, who proved his identity by presenting a screenshot of his Amazon affiliate account in the name "final-fantas07", claims to earn thousands of dollars from the practice, and denies that he is causing any harm.
In a fascinating interview with The Daily Dot, 'Steve' said that he is trained in Avionics, but currently makes his living online by spamming websites.
He admitted to previously spamming Facebook and Twitter, but said that he has found Pinterest - established in 2009 and now claiming more than 11m monthly users - a much easier target.
"Pinterest is by FAR the easiest social network to spam right now. Quite possibly the easiest ever to spam," said 'Steve'.
"It requires almost no work to get started and no money to invest. You just have to know how the system works and how you can fix it to your advantage."
He started with manual posts of 'pins' of affiliate products or links on the site, earning him around $20 in early February, but really started making big money after automating the process.
"As the days came my earnings increased and increased and increased. First week of doing this I made around $2,000, which was February 20-29," he said.
"I stepped my game up and changed the way I was doing some things, and I saw a dramatic increase in my earnings. Went up to $500-800 a day. Kept at it and for the past two weeks I have made over $1,000 a day with the highest earnings being around $1,900."
'Steve' said he believes earnings will soon increase to around $2,500 a day, but also admitted that he expects it all to come "crashing down" at some point.
The spammer claimed to have a "stockpile of accounts" on Pinterest, and denied the site's assertion that it is 'invite only'. He said: "That's a marketing ploy to get people interested, and women will fall for it instantly. No disrespect intended to anyone."
More worryingly for Pinterest users, 'Steve' predicted that "more and more people will figure out how to do what I'm doing", adding: "I have more twists up my sleeve and I will start working on them soon, so you will see new types of spam in the future."
Saying that he doesn't feel guilty for spamming Pinterest, 'Steve' insisted that he was "not trying to scam anyone, or upload viruses to their computer or anything like that".
He added: "I simply show products to the Pinterest community. I realise that I'm spamming the crap out of the site, but it's nothing personal, just business."
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