slighty OT, but it is a travesty that Quizlet (previously Slader) has gone behind a paywall. Slader had a lot of community generated solutions to textbook probl

slighty OT, but it is a travesty that Quizlet (previously Slader) has gone behind a paywall. Slader had a lot of community generated solutions to textbook problems. Users gave them the content for free, and they monetized it, kept only verified answered and dumped the (unverified) solutions and feedback.