Do you have plans to use a SuperMemo-like algorithm?

Great question, I love that article and the SuperMemo system is impressive!

One feature I'd like to add in the future, is a full subject review where the user would review a long list of cards at once from an entire category, even if they are not currently subscribed to them. This is where the SuperMemo-like algorithm could come into play, with reminders to study and dynamically generated sets of cards based on the last time you viewed them.

Popling's current card selection algorithm uses user defined easy and hard lists to select which card to show next. You decide how often you want to study cards from these lists through a weighting system.

The default weighting is 75% of the time a hard list card will be displayed and 25% a random selection from all the cards in a Popling will be shown, with the easy list cards not being shown again. You can edit this in the specific Popling's preferences.

While it's not perfect, and could certainly be automated, I'll need to stay with this system while I focus on adding content and other features.

Thanks Lawrence!