I might use it if you would include spaced repetition learning as a service. For example, I would like to get a text message or even an email at some user defin

I might use it if you would include spaced repetition learning as a service. For example, I would like to get a text message or even an email at some user defined interval (every 6 hours, once a week, etc.) with words in the list selected by a spaced repetition algorithm so I can really learn what they mean. If I just added it to a list, I doubt I'd ever really learn them and the service would be useless to me.