Most of the details were posted two weeks ago, in the blog post, comic, and pricing page. Now you also get a billing page when you're logged in, which you can use to extend your subscription. We've got Google Checkout hooked up now, with Paypal coming soon.
I couldn't let launch creep by without at least a little feature, so I spent yesterday hooking up word-level audio from ChinesePod's hoard. We won't have audio for all words, but we'll have a lot of them once the linking job is finished later today, and they sound great. What do you think? Thanks again to ChinesePod for their chivalrous audio-recording skills. [You may have to update your Flash Player for sound to work smoothly.]
Thank you for your support of Skritter. We hope to see you signing up and continuing to help us grow this into the most powerful Chinese practice tool that ever lived.