I'd think that a lot of Skritter users are numbers folks, and it would be nice to be able to export some of the statistics.
I'd love to be able to get the following:
1. export of the "Progress" data (by day/week/month) over any time frame
2. export stats on each word/character being studied (for each part): retention, last studied time, time for next quiz... (basically the same data as the table when you click on a word).
#1, in theory, I can scrape from the website by downloading the appropriate progress page for each time period since I started Skritter.
#2 would be great for me to see which words I haven't seen in a while. Sometimes I get quizzed on words that I don't remember seeing for weeks, even though I don't think I had learned it "that well".
The amount of data for #1 isn't too large, so a simple text export would be easy.
#2 would be a bit more complicated and require a lot of DB inquiries, so I understand the problem with that...