Hi, in the app, when you click the blue information button in the upper right hand corner, you can choose to ban or star a character? What happens when you activate them? I've tried to Star a character, I didn't notice any difference.

Eventually the app will have starred word study. But for now, all uses of the star are on the site. You can view, manage, and study them from here:

http://www.skritter.com/vocab/stars

I found some useful information on the blog:

http://blog.skritter.com/2011/02/export-starred-words.html
http://blog.skritter.com/2011/01/did-you-know-starred-words.html
http://blog.skritter.com/2011/09/new-list-system-banned-words.html

The option to have starred words appear more frequently in general study would be great. For instance, some more difficult writings I can remember and push out to the week+ review phase, at which point I inevitably forget them and the cycle starts again. Or does the algorithm account for such repeated difficulty?