https://github.com/mroth/unindexed/blob/master/README.md
"Unindexed was a website that continuously searched Google for itself over and over. The moment it found itself in the search results it would irrevocably securely delete itself, making the precise instant of algorithmic discovery the catalyst of destruction."
My first thought was how to adapt it to make a website smarter about indexing. Or maybe recording referrals independently of logs.
Reminds me of this:
https://www.youtube.com/watch?v=Z86V_ICUCD4