> A well known wedding magazine ran a promotion with a valid licence key clearly visible in a photograph of a PerfectTablePlan CD. I worked through the night to release a new version of PerfectTablePlan that didn’t work with this key.

This is weird to me on several levels.

- Why would it require "working through the night" to blacklist a key? In large enterprise software, sure. But in a one-person project?

- If past versions still work with the leaked license key, what does this solve? If someone wanted to steal your software, they'd find a key anyway, no?

[Edit]: But a very cool project and a nice writeup! I enjoyed! Good luck!