Dear Skritter Team,
I know you all are very busy maintaining the site, but I'm just curious if you have any future plans to add advanced level vocab lists to your database. As an upper-intermediate/advanced Chinese learner, most of the textbook vocab lists you currently have (save for two or so) are too simple for me to gain anything from. I feel if you had advanced vocabulary lists to study from, I would be incentivized to subscribe to your service. (Ex: I'm currently studying from Chinese Odyssey Vol. 6, but your database only has volumes 1 and 2.)