Sometimes it can be hard to surface cards that you haven't looked at in a while. In an attempt to make it easier to find those cards, we've added a new collection called 'Thoughts' – these are "lonely" cards that don't satisfy the following statement:
title AND content AND (parents OR children)
Thoughts are for ideas, or quick notes you jot down on the go. In the Thoughts collection you are review these notecards, flesh them out, junk them if they are no longer relevant. Or just leave them in Thoughts to help you find them later.
Let us know what you think over on the Community and if you have suggestions for other default collections.