If you ever find yourself trying to explain what Web 2.0 is all about, here's a quiet, excellent example you can point to. A random web user encounters a breaking news story about a man accused of kidnapping, (apparently) did some rudimentary searching, used a free and useful web archive and search tool, and pointed any interested parties within a certain community of web users to a cached version of the suspect's weblog, which reveals a wealth of interesting if chilling information that moves the narrative of our knowledge forward long before any word of it reaches common news aggregators. Once the new information is there, some chafe is posted but more wheat is added to the story. It may all end up being hooey-- not the weblog of the suspect. But this example of normal people using freely available tools to contribute to the collective knowledge will remain.