What are /r/RevDem's favorite Products & Services?

From 3.5 billion Reddit comments

it is here, although it's a scan in PDF format http://gen.lib.rus.ec/search.php?req=Dynamics+of+Global+Crisis&lg_topic=libgen&open=0&view=simple&res=25&phrase=1&column=def

also found a non-scanned version, it is in german however https://libgen.pw/view.php?id=1143087