Are any of you familiar with 750words.com ?
I've been using this journaling site that gives you pretty badges if you've written three days in a row, five days in a row, ten days, thirty, and so on.
(you can see a partial list of the badges here: http://750words.com/badges )
What seems kind of frivolous at first has turned out to be insanely motivating. I dread missing a day and ruining my multiple-day writing streak. Many users have gone 100 days without missing a single day. Talk about site stickiness!
I think in SRS systems like Skritter (well, actually in most endeavors) it's far better to do a small session daily than a super-long session once in a while.
For me, the most primal behavior Skritter should reinforce in me is the habit of daily use, because as long as I'm spending time with Skritter, I'm learning. All the other statistics (how many words I know, my retainment percentage, how many minutes I've spent this month, how many words left to review, etc) are secondary and improve naturally from daily use of Skritter.
So this is just an idea for the Skritter developers to consider. I'm posting this to see if other Skritter users would also be interested in having such a feature.
Cheers!