Key Points / SFYL
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In crypto jargon, SFYL is short for Sorry for your loss.
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The acronym was popularized by the forum r/buttcoin.
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The buttcoin community would comment SFYL on any post about a person making a bitcoin purchase, implying it will inevitably eventually be a loss.
 
Within the crypto community, the SFYL phrase has been coined on the r/buttcoin Reddit forum. Buttcoin is an old (and still active) forum for people who think that cryptocurrencies are a joke.
Originally, the buttcoin community members would comment SFYL on any post about a person making a bitcoin purchase, even if the purchase was in profit. They were implying the purchase will inevitably become a loss at some point.
Over time this agenda understandably lost most of its relevance and power.
Best Tools to NOT be sorry for your loss
- DCA to Buy-and-hold on Independent Reserve - Aussie exchange with AutoSchedule feature
 
An indepth look at SFYL is here.