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Re:OpenKeyval.org, a free data store/social experiment by markchristian on Friday October 29, 2010 @01:49PM (#1848185)
Good challenge! Here's a start:

Say you and I want to chat with each other. We both pick a random key to store our messages in. Let's call those key[markchristian] and key[heretoo]. Each of those has a read-only version -- readonly[markchristian] and readonly[heretoo]. I'll post the key readonly[markchristian] to "markchristian-to-heretoo". You post the key readonly[heretoo] to "heretoo-to-markchristian". Our chat clients can just poll those keys, looking for new messages -- whatever hand-wavy format we want to have.

Problems: 1. Requires us to agree to chat ahead of time and know each other's usernames. 2. Nothing to stop a malicious third-party from putting a different readonly key at the "heretoo-to-markchristian" pointer keys.

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