+1 for spaced repetition. I automated a schedule (1, 7, 17, 35 days) based on the SuperMemo algorithm for stuff that I read that I want to remember. Currently exists as a browser extension:

(Chrome) https://chrome.google.com/webstore/detail/harvest-grow-your-...

(Firefox) https://addons.mozilla.org/en-US/developers/addon/harvest-gr...