Thanks for the interest!

1. That's a bit of an omission right now, you're right. I need to add a bit of JS to the generation page, thanks for the feedback.

2. You can click the "Private" button while it's generating, and it will be hidden. Though, you're right, anyone who sees it before will be able to see it after too. I'll add a checkbox to the form right now.

3. You're right, I need to add a license page. It's the same license as SD, so IIRC it's a perpetual license to use them as you see fit.

4. Yeah I should probably have a username blacklist, you're right :P

Thanks, this is very useful!