If you need (almost) every publicly available Reddit comment for any reason -- hey, maybe you're a researcher or maybe you just love data -- then ready your external HDD, because someone bundled 'em all up nicely. User "Stuck_In_the_Matrix" collected every comment he could from as far back as October 2007, two years since the website was founded, up until May 2015. It took him 14 months and about 20 million API calls to farm around 1.65 billion entries, though approximately 350,000 couldn't be collected due to issues with Reddit's API.