Unindexed looks like it 's a bit of a security and art experiment. It's provided as open source code.
The site is constantly searching for itself in Google, over and over and over, 24 hours a day. The instant it finds itself in Google search results, the site will instantaneously and irrevocably securely delete itself. Visitors can contribute to the public content of the site, these contributions will also be destroyed when the site deletes itself.https://github.com/mroth/unindexed
Why would you do such a thing? The full explanation is in the content of the site (which is not linked anywhere here).
UPDATE: The experiment lasted 22 days before it was indexed by Google on 24 February 2015 at 21:01:14 and instantaneously destroyed. It was primarily shared via physical means in the real world, word of mouth, etc.
The content for this site is stored in memory only (via Redis) and is loaded in via a file from an encrypted partition on my personal laptop. This partition is then destroyed immediately after launching the site. Redis backups are disabled. The content is flushed from memory once the site detects that it has been indexed.
The URL of the site can be algorithmically generated and is configured via environment variable, so this source code can be made public without disclosing the location of the site to bots.
Visitors can leave comments on the site while it is active. These comments are similarly flushed along with the rest of the content upon index event, making them equally ephemeral.