Had a long discussion on searching with a newbie, Animo. A semi-automatic introduction protocol for Web-of-Trust Frost or other searching systems (this is all based on existing ideas):
Somebody who wants to do introductions for newbies who want to upload, who is in the Web of Trust, sets up a page (or something), with a list of pages containing: One think-cash puzzle (obscured letters, for example, something that a computer can't do but a human can), to provide half the key One hash-cash puzzle - a key to crack, for example, using some standard software, something that will take a few hours on commodity hardware, provides the other half key. (the difficulty should be configurable - a few tens of minutes should deter casual spammers). Once you have the full key, insert a message including your identity at that KSK location. If the introducer is particularly picky, he may ask you to include the key of some nice new content. It comes in via his frost-mail, and he checks the message and possibly the content, and clicks the Introduce button to accept the newbie and post a reference to his board. This would provide a formal system for introductions, which it should be possible to build into the UI.
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